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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 LV7RlTwpe5ASZxAjk6HC4oZVFPGWkOMncyQ9XAb9P82TUJGB5L2t7EDxyiz9CGOF
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<SEC-DOCUMENT>0000075362-05-000089.txt : 20051003
<SEC-HEADER>0000075362-05-000089.hdr.sgml : 20051003
<ACCEPTANCE-DATETIME>20051003175930
ACCESSION NUMBER:		0000075362-05-000089
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20051003
FILED AS OF DATE:		20051003
DATE AS OF CHANGE:		20051003

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:		PACCAR BUILDING
		STREET 2:		777 106TH AVENUE NE
		CITY:			BELLEVUE
		STATE:			WA
		ZIP:			98004
		BUSINESS PHONE:		425 468 7383

	MAIL ADDRESS:	
		STREET 1:		PACCAR BUILDING
		STREET 2:		777 106TH AVENUE NE
		CITY:			BELLEVUE
		STATE:			WA
		ZIP:			98004

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PACIFIC CAR & FOUNDRY CO
		DATE OF NAME CHANGE:	19720707

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CARNWATH ALISON J
		CENTRAL INDEX KEY:			0001339413

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-14817
		FILM NUMBER:		051118892

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		425 468 7431

	MAIL ADDRESS:	
		STREET 1:		777 106TH AVENUE NE
		CITY:			BELLEVUE
		STATE:			WA
		ZIP:			98004
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2005-10-03</periodOfReport>

    <issuer>
        <issuerCik>0000075362</issuerCik>
        <issuerName>PACCAR INC</issuerName>
        <issuerTradingSymbol>PCAR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001339413</rptOwnerCik>
            <rptOwnerName>CARNWATH ALISON J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>777 106TH AVENUE NE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BELLEVUE</rptOwnerCity>
            <rptOwnerState>WA</rptOwnerState>
            <rptOwnerZipCode>98004</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>COMMON STOCK</value>
            </securityTitle>
            <transactionDate>
                <value>2005-10-03</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>220</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>68.34</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>220</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Restricted stock awarded under PACCAR Restricted Stock and Deferred Compensation Plan for Non-Employee Directors.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Alison Carnwath by Janice M. D'Amato POA</signatureName>
        <signatureDate>2005-10-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>carnwath05.htm
<TEXT>
<html>
<head>
	<title>POWER OF ATTORNEY</title>
</head>

<body>

<DIV style="font-family: Helvetica,Arial,sans-serif">



<DIV align="center" style="font-size: 12pt; margin-top: 18pt"><B>POWER OF ATTORNEY</B></DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 20pt; line-height: 20pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;I, Alison J. Carnwath, hereby appoint and constitute Janice M. D&#146;Amato and David C. Anderson,
acting individually, my true and lawful attorney-in-fact with full power to sign and submit for me
and in my name a Form&nbsp;ID and other documents necessary or appropriate to obtain codes and passwords
enabling the undersigned to make electronic filings of reports required by the Securities Exchange
Act of 1934, an Initial Statement of Beneficial Ownership of Securities issued by PACCAR Inc on
Form&nbsp;3, and a Statement of Changes of Beneficial Ownership of Securities issued by PACCAR Inc on
Form&nbsp;4 and Form&nbsp;5, all to be filed with the Securities and Exchange Commission under the Securities
Exchange Act of 1934, as amended, together with any and all amendments thereto. This power of
attorney shall remain in effect until October&nbsp;31, 2007, unless earlier terminated by the
undersigned in writing.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 20pt; line-height: 20pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;IN WITNESS WHEREOF, the undersigned has executed this power of attorney this 21st day of
September, 2005.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 40pt; margin-left: 50%">/s/ Alison J. Carnwath
<DIV style="border-bottom: 1px solid #000000; font-size: 1px">&nbsp;</DIV>
Alison J. Carnwath

</DIV>


<P align="center" style="font-size: 10pt">
</DIV>

</body>
</html>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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