|  <?xml:namespace              prefix = o ns =              "urn:schemas-microsoft-com:office:office" />CATERPILLAR              FINANCIAL SERVICES              CORPORATION POWERNOTES              (R) With              Maturities of 9 months or more              from Date of Issue   |
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| Registration              No.              333-124310                                                                                                                                                                                                                                                                |   | Trade              Date: | 06/19/06 |
| Filed              Pursuant to Rule 424(b)(3)                                                                                                                                                                                                                                                                        |   | Issue              Date: | 06/22/06 |
| PRICING              SUPPLEMENT NO. 800                                                                                                                                                                                                                                                                              |   |   |   |
| (To              Prospectus Supplement dated July 7, 2005 & Prospectus dated May 13,              2005)                                                                                                                                                                                                          |   |   |   |
| The              Date              of this Pricing Supplement:               June 19, 2006                                                                                                                                                                                                                      |   |   |   |
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|----------------------------------|-------------------------------|--------------------------------------------|-----------------------------------------------|-------------------------------|------------------------|---------------------------------|--------|---------------------------|--------|--------------------------|--------|-----------------|--------|--------|--------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| CUSIP              or CommonCode |                          | 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) |
| 14911Q3H2                        |                          | 5.50%                                      |                                          | 06/15/11                      |                   | 100%                            |   | 0.94%                     |   | Semi-Annually            |   | YES             |   | YES    |   | Callable              at 100% beginning 06/15/08 and semi-annually              thereafter.                                                                                                |
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|                             | Principal              Amount | Proceeds                                   | Dealer                                        | 1st              Payment Date | Day              Count |                            |
|                             |                          |                                       |                                          |                          |                   |                            |
|                             | $1,553,000.00                 | $1,538,401.80                              | LaSalle              Financial Services, Inc. | 12/15/06                      | 30/360                 |                            |
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|                             | Yield              (3)        | Moody’s              /S&P Rating |                                          |                          |                   |                            |
|                             |                          |                                       |                                          |                          |                   |                            |
|                             | 5.499                         | A2/A                                       |                                          |                          |                   |                            |
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|---------------------------------------------------------|--------|---------|--------|--------|--------|------------------------------------------------------|--------|
| Original              Issue              Discount Note: |   | YesoNox |   |   |   | Total              Amount of              OID:  | N/A    |

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| (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,              $611.505mm principal amount of the PowerNotes ® remain available for sale              pursuant to the accompanying Prospectus              Supplement. |
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| (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.                                                                                                                                                                                                                                                                                                         |
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| (3)    | Yields              are quoted on              an semi-annual bond equivalent yield              basis.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |