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GMC V6 and V12 Engines Engine repair and rebuilding

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  #11  
Old March 8th, 2023, 03:06 AM
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LEWISMATKIN LEWISMATKIN is offline
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Default Re: oil drain plug gasket
Quote:
Originally Posted by bigred1 View Post
where can I order a oil drain plug gasket for my 305. drain plug is 1 1/8
the closest gasket i can find is NAPA 704-1358. i worked for napa for around 25 years and i am quite sure this is what i used to replace mine on my GMC.
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Old March 8th, 2023, 01:07 PM
James James is offline
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Default Re: hard start
I used P/N: AN900-14, it is a copper crush washer. See attached file for proper installation.

I find the solid copper drain plug gasket to hard and they leaks.
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File Type: pdf Copper_crush_gaskets.pdf (96.6 KB, Multiple views, 4 clicks)
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