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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 ApI8TwF3xFHWkseaC9HgyIratGRYKcpR1TM/JkSfcs1l0lK/oqyaSZNWBMREuKWX
 UNVySc8QU6Xef6WiNPEQew==

<SEC-DOCUMENT>0000075362-03-000140.txt : 20030703
<SEC-HEADER>0000075362-03-000140.hdr.sgml : 20030703
<ACCEPTANCE-DATETIME>20030703141103
ACCESSION NUMBER:		0000075362-03-000140
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030702
FILED AS OF DATE:		20030703

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			PIGOTT MARK C
		CENTRAL INDEX KEY:			0001191930

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-14817
		FILM NUMBER:		03774934

	BUSINESS ADDRESS:	
		STREET 1:		PACCAR INC
		STREET 2:		P.O. BOX 1518
		CITY:			BELLEVUE
		STATE:			WA
		ZIP:			98009

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PACCAR INC
		CENTRAL INDEX KEY:			0000075362
		STANDARD INDUSTRIAL CLASSIFICATION:	MOTOR VEHICLES & PASSENGER CAR BODIES [3711]
		IRS NUMBER:				910351110
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		777 106TH AVE NE
		STREET 2:		PO BOX 1518
		CITY:			BELLEVUE
		STATE:			WA
		ZIP:			98004
		BUSINESS PHONE:		4254557383

	MAIL ADDRESS:	
		STREET 1:		777 106TH AVENUE NE
		STREET 2:		PO BOX 1518
		CITY:			BELLEVUE
		STATE:			WA
		ZIP:			98004

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PACIFIC CAR & FOUNDRY CO
		DATE OF NAME CHANGE:	19720707
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0101</schemaVersion>

    <documentType>4</documentType><periodOfReport>2003-07-02</periodOfReport>
    <issuer>
        <issuerCik>0000075362</issuerCik>
        <issuerName>PACCAR INC</issuerName>
        <issuerTradingSymbol>PCAR</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId>
            <rptOwnerCik>0001191930</rptOwnerCik>
            <rptOwnerName>PIGOTT MARK C</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>  </rptOwnerStreet1>
            <rptOwnerStreet2>  </rptOwnerStreet2>
            <rptOwnerCity>  </rptOwnerCity>
            <rptOwnerState>  </rptOwnerState>
            <rptOwnerZipCode>  </rptOwnerZipCode>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
<isDirector>1</isDirector><isOfficer>1</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther><officerTitle>CHAIRMAN &amp; CEO</officerTitle></reportingOwnerRelationship></reportingOwner><nonDerivativeSecurity><securityTitle><value>COMMON STOCK (SIP)</value></securityTitle><transactionDate><value>2003-07-02</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>J</transactionCode><equitySwapInvolved>0</equitySwapInvolved><footnoteId id="F1"/></transactionCoding><transactionAmounts><transactionShares><value>48.3</value><footnoteId id="F2"/></transactionShares><transactionValue><value>67.67</value></transactionValue><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>14916.4</value><footnoteId id="F2"/><footnoteId id="F3"/></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>
D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></nonDerivativeSecurity><nonDerivativeSecurity><securityTitle><value>COMMON STOCK</value></securityTitle><transactionDate><value>2003-07-02</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>J</transactionCode><equitySwapInvolved>0</equitySwapInvolved><footnoteId id="F4"/></transactionCoding><transactionAmounts><transactionShares><value>0</value></transactionShares><transactionValue><value>0</value></transactionValue><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>11196</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>I</value><footnoteId id="F5"/></directOrIndirectOwnership><natureOfOwnership><value>WIFE &amp; CHILDREN</value></natureOfOwnership></ownershipNature></nonD
erivativeSecurity><nonDerivativeSecurity><securityTitle><value>COMMON STOCK</value></securityTitle><transactionDate><value>2003-07-02</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>J</transactionCode><equitySwapInvolved>0</equitySwapInvolved><footnoteId id="F4"/></transactionCoding><transactionAmounts><transactionShares><value>0</value></transactionShares><transactionValue><value>0</value></transactionValue><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>402682</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>I</value><footnoteId id="F6"/></directOrIndirectOwnership><natureOfOwnership><value>EASCLIFFE COMPANY</value></natureOfOwnership></ownershipNature></nonDerivativeSecurity><derivativeSecurity><securityTitle><value>STOCK OPTION</value></securityTitle><conversionOr
ExercisePrice><value>14.50</value></conversionOrExercisePrice><transactionDate><value>2003-07-02</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>J</transactionCode><equitySwapInvolved>0</equitySwapInvolved><footnoteId id="F4"/></transactionCoding><transactionAmounts><transactionShares><value>0</value></transactionShares><transactionValue><value>0</value><footnoteId id="F7"/></transactionValue><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>1998-01-01</value></exerciseDate><expirationDate><value>2005-04-25</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>COMMON STOCK</value></underlyingSecurityTitle><underlyingSecurityShares><value>59595</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>59595</value><footnoteId id="F8"/></sharesOwnedFollowingTransaction></postTransactionAmounts><owne
rshipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeSecurity><derivativeSecurity><securityTitle><value>COMMON STOCK (LTIP)</value><footnoteId id="F9"/></securityTitle><conversionOrExercisePrice><value>0</value></conversionOrExercisePrice><transactionDate><value>2003-07-02</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>J</transactionCode><equitySwapInvolved>0</equitySwapInvolved><footnoteId id="F4"/></transactionCoding><transactionAmounts><transactionShares><value>0</value></transactionShares><transactionValue><value>0</value></transactionValue><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>1988-08-08</value><footnoteId id="F9"/></exerciseDate><expirationDate><value>1988-08-08</value><footnoteId id="F9"/></expirationDate><underlyingSecurity><underlyingSecurityTitle><val
ue>COMMON STOCK</value></underlyingSecurityTitle><underlyingSecurityShares><value>8306.8</value><footnoteId id="F2"/></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>8306.8</value><footnoteId id="F2"/></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeSecurity><derivativeSecurity><securityTitle><value>COMMON STOCK (DICP)</value><footnoteId id="F10"/></securityTitle><conversionOrExercisePrice><value>0</value></conversionOrExercisePrice><transactionDate><value>2003-07-02</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>J</transactionCode><equitySwapInvolved>0</equitySwapInvolved><footnoteId id="F4"/></transactionCoding><transactionAmounts><transactionShares><value>0</value><footnoteId id="F2"/></transactionShares><transacti
onValue><value>0</value></transactionValue><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>1988-08-08</value><footnoteId id="F10"/></exerciseDate><expirationDate><value>1988-08-08</value><footnoteId id="F10"/></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>COMMON STOCK</value></underlyingSecurityTitle><underlyingSecurityShares><value>20702.6</value><footnoteId id="F2"/></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>20702.6</value><footnoteId id="F2"/></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeSecurity><footnotes><footnote id="F1">June 5, 2002 dividend on PACCAR Savings Investment Plan (SIP) shares reinvested pursuant to SIP.  SIP information based on most recent report f
rom SIP Trustee - received July 2, 2002.</footnote><footnote id="F2">Fractional shares rounded to nearest 1/10.</footnote><footnote id="F3">Reporting Person also holds 694,968 shares of common stock outside SIP.</footnote><footnote id="F4">Holding unchanged.  Transaction code and date are used to force the system to report the holding.</footnote><footnote id="F5">Shares in which beneficial ownership is disclaimed.</footnote><footnote id="F6">Shares held with others.</footnote><footnote id="F7">Awarded pursuant to PACCAR Long Term Incentive Plan (LTIP).</footnote><footnote id="F8">Reporting Person has additional options to purchase Common Stock as follows:  63,813 shares at $16.50 per share exercisable January 1, 1999 and expiring April 30, 2006; 79,275 shares at $24.42 per share exercisable January 1, 2000 and expiring April 29, 2007; 59,437 shares at $35.67 per share exercisable January 1, 2001 and expiring April 28, 2008; 92,110 shares at $35.85 per share exercisable January 1, 2002 and expiring April 27, 
2009; 104,089 shares at $27.83 per share exercisable January 1, 2003 and expiring January 25, 2010; 101,434 shares at $34.42 exercisable January 1, 2004 and expiring January 24, 2011; 84,363 shares at $42.31 exercisable January 1, 2005 and expiring January 23, 2012; 73,608 shares at $47.10 exercisable January 1, 2006 and expiring January 15, 2013.</footnote><footnote id="F9">Share units held in deferred phantom stock account under LTIP convertible to common stock on a one-for-one basis upon satisfaction of all applicable vesting conditions.</footnote><footnote id="F10">Share units held in deferred phantom stock account under DICP convertible to common stock on a one-for-one basis upon satisfaction of all applicable vesting conditions.</footnote></footnotes><ownerSignature><signatureName>Mark Pigott</signatureName><signatureDate>2003-07-03</signatureDate></ownerSignature></ownershipDocument>

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</SEC-DOCUMENT>
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