<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED STATEMENTS OF INCOME FOR THE NINE MONTHS ENDED SEPTEMBER 30,
2000 AND 1999, AND THE CONSOLIDATED BALANCE SHEETS, SEPTEMBER 30, 2000,
AND DECEMBER 31, 1999, OF PACCAR INC AND SUBSIDIARIES AND IS QUALIFIED IN
ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.

<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-2000
<PERIOD-END>                               SEP-30-2000
<CASH>                                         444,900
<SECURITIES>                                   496,900
<RECEIVABLES>                                5,524,700
<ALLOWANCES>                                         0
<INVENTORY>                                    329,400
<CURRENT-ASSETS>                                     0
<PP&E>                                         839,100
<DEPRECIATION>                                       0
<TOTAL-ASSETS>                               8,279,000
<CURRENT-LIABILITIES>                                0
<BONDS>                                      1,791,800
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        78,500
<OTHER-SE>                                   2,179,500
<TOTAL-LIABILITY-AND-EQUITY>                 8,279,000
<SALES>                                      5,893,200
<TOTAL-REVENUES>                             6,247,500
<CGS>                                        5,118,600
<TOTAL-COSTS>                                5,340,900
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                27,800
<INTEREST-EXPENSE>                               9,600
<INCOME-PRETAX>                                571,300
<INCOME-TAX>                                   192,200
<INCOME-CONTINUING>                            379,100
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   379,100
<EPS-BASIC>                                       4.93
<EPS-DILUTED>                                     4.90