Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
PIGOTT MARK C
   2. Issuer Name and Ticker or Trading Symbol
PACCAR INC [PCAR] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
CHAIRMAN & CEO
(Last)
(First)
(Middle)
777 106TH AVENUE NE		 3. Date of Earliest Transaction (Month/Day/Year)
03/06/2006
(Street)

BELLEVUE, WA 98004		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
COMMON STOCK               1,056,452 D  
COMMON STOCK (SIP) (1)               25,242.1 D  
COMMON STOCK               54,794 I (2) WIFE & CHILDREN
COMMON STOCK               581,730 I (3) EASCLIFFE COMPANY

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
STOCK OPTION (4) $ 16.28             01/01/2000 04/29/2007 COMMON STOCK 118,912   118,912 D  
STOCK OPTION (4) $ 23.78             01/01/2001 04/28/2008 COMMON STOCK 89,155   89,155 D  
STOCK OPTION (4) $ 23.9             01/01/2002 04/27/2009 COMMON STOCK 138,165   138,165 D  
STOCK OPTION (4) $ 18.56             01/01/2003 01/25/2010 COMMON STOCK 156,133   156,133 D  
STOCK OPTION (4) $ 22.94             01/01/2004 01/24/2011 COMMON STOCK 152,151   152,151 D  
STOCK OPTION (4) $ 28.2             01/01/2005 01/23/2012 COMMON STOCK 126,544   126,544 D  
STOCK OPTION (4) $ 31.4             01/01/2006 01/15/2013 COMMON STOCK 110,412   110,412 D  
STOCK OPTION (4) $ 56.95             01/01/2007 01/15/2014 COMMON STOCK 60,030   60,030 D  
STOCK OPTION (4) $ 72.25             01/01/2008 01/20/2015 COMMON STOCK 76,908   76,908 D  
STOCK OPTION (4) $ 72.51             01/01/2009 01/26/2016 COMMON STOCK 65,486   65,486 D  
COMMON STOCK (LTIP) (5) (5) 03/06/2006   J(6)   49.7     (5)   (5) COMMON STOCK 49.7 $ 69.15 13,784.5 D  
COMMON STOCK (DICP) (7) (7) 03/06/2006   J(8)   123.8     (7)   (7) COMMON STOCK 123.8 $ 69.15 34,354.3 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
PIGOTT MARK C
777 106TH AVENUE NE
BELLEVUE, WA 98004		   X     CHAIRMAN & CEO  

Signatures

 Mark Pigott   03/06/2006
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Shares held in PACCAR Savings Investment Plan (SIP). SIP information based on most recent report from SIP trustee.
(2) Shares in which beneficial ownership is disclaimed.
(3) Shares held by a corporation in which Reporting Person is a shareholder. Holding is reported voluntarily as Reporting Person is not a controlling shareholder and has no voting or investment power with respect to the Issuer's securities.
(4) Option to buy awarded under PACCAR Long Term Incentive Plan (LTIP).
(5) 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.
(6) Dividend on share units held in deferred phantom stock account under LTIP reinvested pursuant to LTIP.
(7) Share units held in deferred phantom stock account under PACCAR Deferred Incentive Compensation Plan (DICP) convertible to common stock on a one-for-one basis upon satisfaction of all applicable vesting conditions.
(8) Dividend on share units held in deferred phantom stock account under DICP reinvested pursuant to DICP.
 
Remarks:
Fractional shares rounded to nearest 1/10.

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