| CATERPILLAR      FINANCIAL SERVICES CORPORATION POWERNOTES      (R) With      Maturities of 9 months or more from Date of Issue  |
|-------------------------------------------------------------------------------------------------------------------------------------------------|
| Registration      No. 333-124310                                                                                                                |   | Trade      Date: | 3/10/2008 |
| Filed      Pursuant to Rule 424(b)(3)                                                                                                           |   | Issue      Date: | 3/13/08 |
| PRICING      SUPPLEMENT NO. 1109                                                                                                                |   |   |   |
| (To      Prospectus Supplement dated July 7, 2005 & Prospectus dated May 13,      2005)                                                     |   |   |   |
| The      Date of this Pricing Supplement: March 10, 2008                                                                                   |   |   |   |
|                                                                                                                                            |   |   |   |

|                    |             |                           |               |             |      |                         |   |                      |   |                     |   |            |   |   |   |                                                                                                                                                  |
|-------------------------|------------------|--------------------------------|--------------------|------------------|-----------|------------------------------|--------|---------------------------|--------|--------------------------|--------|-----------------|--------|--------|--------|-------------------------------------------------------------------------------------------------------------------------------------------------------|
| CUSIP      orCommonCode |             | StatedInterestRate      (1)    |               | Maturity         |      | Price      toPublic      (2) |   | Discounts&Commissions |   | InterestPaymentFrequency |   | SurvivorsOption |   | Yes/No |   | SUBJECT TO REDEMPTION OR      REPAYMENTDate      and terms of redemption or repayment (including any applicable regular or      special record dates) |
| 14912HJR2               |             |     4.900% |               | 03/15/18         |      | 100%                         |   | 1.500%                    |   | Semi-Annually            |   | YES             |   | YES    |   | Callable      at 100% beginning 03/15/10 and semi- annuallythereafter                                                                                 |
|                    |             |                           |               |             |      |                         |   |                      |   |                     |   |            |   |   |   |                                                                                                                                                  |
|                    |             |                           |               |             |      |                         |   |                      |   |                     |   |            |   |   |   |                                                                                                                                                  |
|                    |             |                           |               |             |      |                         |
|                    | Principal Amount | Proceeds                       | Dealer (4)         | 1st Payment Date | Day Count |                         |
|                    |             |                           |               |             |      |                         |
|                    | $830,000.00      | $817,550.00                    | Incapital      LLC | 09/15/08         | 30/360    |                         |
|                    |             |                           |               |             |      |                         |
|                    | Yield (3)        | Moody’s /S&P Rating  |               |             |      |                         |
|                    |             |                           |               |             |      |                         |
|                    | 4.900%           | A2/A                           |               |             |      |                         |

|                               |   |                      |   |   |   |                            |   |
|------------------------------------|--------|---------------------------|--------|--------|--------|---------------------------------|--------|
| Original      Issue Discount Note: |   | Yes o No x |   |   |   | Total      Amount of OID:  | N/A    |

|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |   |   |   |
|--------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|--------|--------|
| (1)    | The      interest rates on the PowerNotes ® may be changed by Caterpillar Financial      Services Corporation from time to time, but any such change will not      affect the interest rate on any PowerNotes ® offered prior to the      effective date of the change.  After the issuance of the      PowerNotes® covered by this Pricing Supplement, $519.787 mm principal      amount of PowerNotes® remain available for sale pursuant to the      accompanying Prospectus Supplement.  |
| (2)    | Expressed      as a percentage of aggregate principal amount.  Actual Price to      Public may be less, and will be determined by prevailing market prices at      the time of purchase as set forth in the confirmation sheet.                                                                                                                                                                                                                                                                                  |
| (3)    | Yields      are quoted on a semi-annual bond equivalent yieldbasis.                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
| (4)    | As      of March 3, 2008 Incapital LLC will serve as Purchasing Agent for the      $1,000,000,000 PowerNotes® program established pursuant to the prospectus      supplement dated July 7, 2005 to the Prospectus dated May 13,      2005.                                                                                                                                                                                                                                                                            |