Re: oil pan plug seal
NOTICE
I checked a spare pan plug I have, James is right. The plug threads are 7/8 and the OD of gasket is near 1 1/4, Very strange that Rockauto, O'Reilly's and Napa, all say the one I linked is correct for 1963 GMC 305 V6.
Last edited by AZKen; July 26th, 2020 at 02:25 AM.
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