6066 (1960-1966) GMC Truck Club

6066 (1960-1966) GMC Truck Club (https://6066gmcclub.com/index.php)

- GMC V6 and V12 Engines (https://6066gmcclub.com/forumdisplay.php?f=9)

- - oil pan plug seal (https://6066gmcclub.com/showthread.php?t=50901)

jmfurgason

July 24th, 2020 06:12 PM

oil pan plug seal

Any one have an idea of what size seal or gasket fits the oil plug on 305E 1963 ? thanks to all JMF

AZKen

July 25th, 2020 08:28 PM

Re: oil pan plug seal

DORMAN 097022 Nylon; Nylon Gasket; Size; 1/2", M12; Inside Dia: 0.504"/12.80mm; Outside Dia.: 0.988"/25.10mm; Thickness:
0.068"/1.73mm

https://www.oreillyauto.com/detail/b...097022/4177613

https://www.napaonline.com/en/search...=nol-veh-conds

James

July 25th, 2020 09:26 PM

Re: oil pan plug seal

1 Attachment(s)

On the engines that I have I am using P/N: AN900-14
It is 7/8" ID. Use the attached instructions for installation.
Can be found on ebay for around $12.00 for a pack of 10.

AZKen

July 25th, 2020 11:03 PM

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.

jmfurgason

July 26th, 2020 12:37 AM

Re: oil pan plug seal

Thanks to all responses ,ordered dorman nylon, Jmf:ok::ok::ok:

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