bellett.net • PR 91 Welch plugs

Page 1 of 1

PR 91 Welch plugs

Posted: Fri Jun 18, 2021 5:01 am

by KJB

PR91 Welch plugs are 1.25" diameter - (must be a carry over from Hillman days! ) not 32mm (very close but not quite!)

Re: PR 91 Welch plugs

Posted: Sun Jun 20, 2021 12:11 am

by flying

Hey KJB
Just like the spin on oil filters with 3/4-16 thread not 20 mm
Cheers

Re: PR 91 Welch plugs

Posted: Thu Jun 24, 2021 8:16 am

by PR91

Alot of cars are 3/4 oil filters. Is the most common size even in Japanese stuff.