oil pan plug seal

[jmfurgason]

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

[AZKen]

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/dorman-autograde-3358/gaskets-25077/engine-25078/oil-pan-25086/oil-drain-plug-gasket-12112/9e930df3f0ab/dorman-autograde-drain-plug-gasket/097022/4177613

https://www.napaonline.com/en/search?input-q=5.0+L+305+CID+V6&q=N%3D2500010%2B2601003%2B2803563%2B10196300%2B500 3000%2B200300930%2B403002800%2B599999900%26Nty%3D1 %26Score%3D0.75&text=drain%2Bplug%2Bgasket&keywordInput=drain+plug+gasket&referer=nol-veh-conds

[James]

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]

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]

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