| CALCULATION      OF REGISTRATION FEE                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Title      of Each Class of Securities Offered                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | Maximum      Aggregate Offering Price (1) | Amount      of Registration Fee(2) |
| MEDIUM-TERM      NOTES, SERIES F, 7.05% NOTES DUE 2018                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | $550,000,000 | $21,615.00 |
| (1)      Excludes acrrued interest, if any.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |   |
| (2)      The filing fee of $21,615.00 is calculated in accordance with Rule 457(r)      under the Securities Act of 1933.  Pursuant to Rule 457(p) under      the Securities Act of 1933, the $7,467.00 remaining of the filing fee      previously paid with respect to unsold securities registered pursuant to a      Registration Statement on Form S-3 (No. 333-124310) filed by Caterpillar      Financial Services Corporation on April 25, 2005 is being carried forward      and used to offset the registration  fees due for this      offering.  After application of that remaining offset of      $7,467.00, the total registration fee due to be paid for this offering is      $14,148.00. |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |   |   |
| PRICING      SUPPLEMENT NO. 434                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   | Filed      Pursuant to Rule 424(b)(3) |
| Dated      September 23, 2008 to                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   | Registration      No. 333-150218 |
| PROSPECTUS      SUPPLEMENT                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |   |   |
| Dated      April 11, 2008 and                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |   |   |
| PROSPECTUS                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |   |   |
| Dated      April 11, 2008                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |   |   |
| CATERPILLAR      FINANCIAL SERVICES CORPORATION                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   |
| MEDIUM-TERM      NOTES, SERIES F, 7.05% NOTES DUE 2018                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |   |   |
| SUBJECT                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   | FINAL PRICING DETAILS |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |   |   |
| Issuer:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   | Caterpillar      Financial Services Corporation |
| Title      of Securities:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |   | Medium-Term      Notes, Series F, 7.05% Notes Due 2018 |
| Ratings:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   | A2/A |
| Format:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   | SEC      Registered-Registration Statement Number 333-150218 |
| Trade      Date/Pricing Effective Time:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   | September      23, 2008 |
| Settlement      Date (Original Issue Date):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   | September      26, 2008 |
| Maturity      Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |   | October      1, 2018 |
| Principal      Amount:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   | $550,000,000 |
| Price      to Public (Issue Price):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |   | 99.673% |
| Dealers'      Commission:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |   | 0.475%      (47.5 basis points) |
| All-in-price:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |   | 99.198% |
| Net      Proceeds to Issuer:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   | $545,589,000 |
| Coupon:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   | 7.050% |
| Yield      to Maturity:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   | 7.096% |
| Spread      Multiplier:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   | N/A |
| Spread/Spread      Multiplier Reset Option:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   | N/A |
| Optional      Reset Dates (only applicable if option to reset spread or spread      multiplier):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | N/A |
| Basis      for Interest Rate Reset (only applicable if option to reset spread or      spread multiplier):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                | N/A |
| Specified      Currency:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   | U.S.      Dollars |
| Option      to Elect Payment in U.S. Dollars  (only applicable if Specified      Currency is other than U.S. Dollars):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | N/A |
| Authorized      Denominations (only applicable if Specified Currency is other than U.S.      Dollars):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | N/A |
| Historical      Exchange Rate (only applicable if Specified Currency is other than U.S.      Dollars):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | N/A |
| Maximum      Interest Rate:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   | N/A |
| Minimum      Interest Rate:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   | N/A |
| Interest      Payment Dates:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   | Interest      will be paid semi-annually on the 30th of each March and      September |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |   | of      each year, commencing March 30, 2009 and ending on the Maturity      Date, |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |   | provided      that the final interest payment will be made on the Maturity      Date. |
| Stated      Maturity Extension Option:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   | N/A |
| Extension      Period(s) and Final Maturity Date (only applicable if option to extend      stated maturity):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             | N/A |
| Basis      for Interest Rate During Extension Period (only applicable if option to      extend stated maturity):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | N/A |
| Original      Issue Discount Note:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |   | N/A |
| Total      Amount of OID:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |   | N/A |
| Terms      of Amortizing Notes:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |   | N/A |
| Redemption      Date(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   | N/A |
| Redemption      Price:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   | N/A |
| Repayment      Date(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   | N/A |
| Repayment      Price(s):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   | N/A |
| Day      Count Convention:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |   | 30/360 |
| Denominations:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | Minimum      denominations of $1,000 with increments of $1,000    thereafter |
| Joint      Book Runners:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |   | Barclays      Capital Inc. (30.34%) |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |   | Citigroup      Global Markets Inc. (30.33%) |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |   | Merrill      Lynch, Pierce, Fenner & Smith Incorporated (30.33%) |
| Co-Managers:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |   | Banc      of America Securities LLC (3.0%) |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |   | BNP      Paribas Securities Corp. (3.0%) |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |   | Goldman,      Sachs & Co. (3.0%) |
| Billing      and Delivery Agent:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   | Barclays      Capital Inc. |
| Exchange      Rate Agent:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |   | U.S.      Bank Trust National Association |
| Calculation      Agent:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |   | U.S.      Bank Trust National Association |
| CUSIP:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |   | 14912L4D0 |
| Other      Terms:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |   | N/A |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |   |   |
| CAPITALIZED      TERMS USED HEREIN WHICH ARE DEFINED IN THE PROSPECTUS SUPPLEMENT SHALL      HAVE THE MEANINGS ASCRIBED THERETO IN THE PROSPECTUS SUPPLEMENT. THE      INTEREST RATES ON THE NOTES MAY BE CHANGED BY CATERPILLAR FINANCIAL      SERVICES CORPORATION FROM TIME TO TIME, BUT ANY SUCH CHANGE WILL NOT      AFFECT THE INTEREST RATE ON ANY NOTES OFFERED PRIOR TO THE EFFECTIVE DATE      OF THECHANGE.                                                                                                                                                                                                                                                                                                                   |