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 *
TEMBREULL MICHAEL A
   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)
VICE CHAIRMAN
(Last)
(First)
(Middle)
777 106TH AVENUE NE		 3. Date of Earliest Transaction (Month/Day/Year)
04/12/2006
(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 (SIP) 04/12/2006   J(1)   128.9 A $ 69.46 35,939.3 D  
COMMON STOCK (SIP) 04/12/2006   J(2)   1 A $ 70.43 35,940.3 D  
COMMON STOCK               20,823 D  

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 (3) $ 22.94             01/01/2004 01/24/2011 COMMON STOCK 66,449   66,449 D  
STOCK OPTION (3) $ 28.2             01/01/2005 01/23/2012 COMMON STOCK 71,901   71,901 D  
STOCK OPTION (3) $ 31.4             01/01/2006 01/15/2013 COMMON STOCK 66,498   66,498 D  
STOCK OPTION (3) $ 56.95             01/01/2007 01/15/2014 COMMON STOCK 36,156   36,156 D  
STOCK OPTION (3) $ 72.25             01/01/2008 01/20/2015 COMMON STOCK 37,326   37,326 D  
STOCK OPTION (3) $ 72.51             01/01/2009 01/26/2016 COMMON STOCK 35,206   35,206 D  
COMMON STOCK (LTIP) (4) (4)               (4)   (4) COMMON STOCK 32,660.6   32,660.6 D  
COMMON STOCK (DICP) (5) (5)               (5)   (5) COMMON STOCK 21,821.8   21,821.8 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
TEMBREULL MICHAEL A
777 106TH AVENUE NE
BELLEVUE, WA 98004		   X     VICE CHAIRMAN  

Signatures

 M. A. Tembreull   04/13/2006
**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) March 6, 2006 dividend on PACCAR Savings Investment Plan (SIP) shares reinvested pursuant to SIP. (SIP information based on most recent report from SIP Trustee - received April 12, 2006.)
(2) Interest on funds held in SIP pending investment in shares reinvested in shares March 24, 2006 pursuant to SIP.
(3) Option to buy awarded under PACCAR Long Term Incentive Plan (LTIP).
(4) 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.
(5) 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.
 
Remarks:
Fractional shares rounded to nearest 1/10.

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