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<P align="center" style="font-size: 14pt"><B>UNITED STATES<BR>
SECURITIES AND EXCHANGE COMMISSION<BR>
<FONT style="font-size: 12pt">Washington, D.C. 20549
</FONT></B>

<P align="center" style="font-size: 18pt"><B>FORM 8-K</B>

<P align="center" style="font-size: 12pt"><B>CURRENT REPORT<BR>
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934</B>

<P align="center" style="font-size: 10pt"><B>Date of Report (Date of earliest event reported): March 16, 2009</B>

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<P align="center" style="font-size: 24pt"><B>PACCAR Inc<BR></B>
<FONT style="font-size: 10pt">(Exact name of registrant as specified in its charter)
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    <TD style="border-bottom: 1px solid #000000"><B>Delaware</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-bottom: 1px solid #000000"><B>001-14817</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-bottom: 1px solid #000000"><B>91-0351110</B></TD>
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    <TD>(State or other Jurisdiction of Incorporation)</TD>
    <TD>&nbsp;</TD>
    <TD>(Commission File Number)</TD>
    <TD>&nbsp;</TD>
    <TD>(IRS Employer Identification No.)</TD>
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    <TD style="border-bottom: 1px solid #000000"><B>777 106th Avenue NE, Bellevue, WA<BR></B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-bottom: 1px solid #000000"><B>98004</B></TD>
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<TR valign="top">
    <TD>(Address of Principal Executive Offices)</TD>
    <TD>&nbsp;</TD>
    <TD>(Zip Code)</TD>
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<P align="center" style="font-size: 10pt">Registrant&#146;s telephone number, including area code: <B>(425) 468-7400</B>


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    <TD nowrap>(Former name or former address if changed since last report.)</TD>
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<P align="left" style="font-size: 10pt">Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant
under any of the following provisions:

<P align="left" style="font-size: 10pt">
<FONT face="Wingdings">&#111;</FONT> Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)<BR><BR>
<FONT face="Wingdings">&#111;</FONT> Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)<BR><BR>
<FONT face="Wingdings">&#111;</FONT> Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))<BR><BR>
<FONT face="Wingdings">&#111;</FONT> Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))<BR>


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<P align="left" style="font-size: 10pt"><B>Item&nbsp;7.01 Regulation&nbsp;FD Disclosure.</B>


<P align="left" style="font-size: 10pt">On March&nbsp;16, 2009, the Company issued a press release announcing new technology centers and commenting on market
conditions. The announcement, a copy of which is furnished as Exhibit&nbsp;99.1 to this Report, is incorporated herein by
reference.


<P align="left" style="font-size: 10pt">This Report contains &#147;forward-looking statements&#148; within the meaning of the Private Securities Litigation Reform Act.
These statements are based on management&#146;s current expectations and are subject to uncertainty and changes in
circumstances. Actual results may differ materially from those included in these statements due to a variety of
factors. More information about these factors is contained in the Company&#146;s filings with the Securities and Exchange
Commission.


<P align="left" style="font-size: 10pt"><B>Item&nbsp;9.01 Financial Statements and Exhibits</B>


<P align="left" style="font-size: 10pt">(d)&nbsp;Exhibits.
<BR>
The following are furnished as Exhibits to this Report.

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    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">99.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Press release of March&nbsp;16, 2009 regarding technology centers
and the commercial vehicle market.</TD>
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<P align="left" style="font-size: 10pt">Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be
signed on its behalf by the undersigned hereunto duly authorized.

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    <TD valign="top"><B>&nbsp;</B></TD>
    <TD>&nbsp;</TD>
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       <TD>&nbsp;</TD>
    <TD colspan="3" valign="top" align="left"><B>PACCAR Inc</B><br><br></TD>
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<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Date:
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">March&nbsp;16, 2009
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">By:
</TD>
       <TD>&nbsp;</TD>
    <TD align="left" valign="top">/s/ D. C. Anderson</TD>
</TR>

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&nbsp;</DIV></TD>
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</DIV></TD>
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</TD>
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    <TD align="left" valign="top">&nbsp;
</TD>

    <TD align="left" valign="top">D. C. Anderson</TD>
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</DIV></TD>
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</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;
</TD>
       <TD>&nbsp;</TD>
    <TD align="left" valign="top">Vice President and General Counsel</TD>
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Form 8-K
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
Date of Report (Date of earliest event reported): March 16, 2009
PACCAR Inc
(Exact name of registrant as specified in its charter)
Delaware
001-14817
91-0351110
(State or other Jurisdiction of Incorporation)
(Commission File Number)
(IRS Employer Identification No.)
777 106th Avenue NE, Bellevue, WA
98004
(Address of Principal Executive Offices)
(Zip Code)
Registrant's telephone number, including area code:
(425) 468-7400
(Former name or former address if changed since last report.)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant
under any of the following provisions:
o
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
o
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
o
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
o
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Item 7.01 Regulation FD Disclosure.
On March 16, 2009, the Company issued a press release announcing new technology centers and commenting on market
conditions. The announcement, a copy of which is furnished as Exhibit 99.1 to this Report, is incorporated herein by
reference.
This Report contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act.
These statements are based on management's current expectations and are subject to uncertainty and changes in
circumstances. Actual results may differ materially from those included in these statements due to a variety of
factors. More information about these factors is contained in the Company's filings with the Securities and Exchange
Commission.
Item 9.01 Financial Statements and Exhibits
(d) Exhibits.
The following are furnished as Exhibits to this Report.
Exhibit Number
Description
99.1
Press release of March 16, 2009 regarding technology centers
and the commercial vehicle market.
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be
signed on its behalf by the undersigned hereunto duly authorized.
PACCAR Inc
Date:
March 16, 2009
By:
/s/ D. C. Anderson
D. C. Anderson
Vice President and General Counsel