Graham Goetze Posted September 19, 2022 Share Posted September 19, 2022 (edited) Hi Guys. As far as I can make out, my PA came with AC G12 spark plugs. Would anyone know what an available equivalent would be? Kind regards, Graham Edited September 19, 2022 by Graham Goetze (see edit history) Link to comment Share on other sites More sharing options...
ply33 Posted September 19, 2022 Share Posted September 19, 2022 I don’t know about an exact match but I believe a number of cars used spark plugs with a 18mm base. A quick search turns up a number of options but it is not clear to me what reach you need nor the temperature range. Link to comment Share on other sites More sharing options...
Graham Goetze Posted September 20, 2022 Author Share Posted September 20, 2022 A friend is using Autolite 3076 in his '28 Chev but I'd like to fins a positive cross reference. Link to comment Share on other sites More sharing options...
viv w Posted September 20, 2022 Share Posted September 20, 2022 Found this chart some time ago for AC plugs. Not sure if the 32 Plymouth used the same plugs as the 28 Chrysler 52 , but I ran my car for many years with Champion W20 plugs with no issues. I later found out after I sold the car that it should have had W16 Link to comment Share on other sites More sharing options...
Hans1 Posted September 22, 2022 Share Posted September 22, 2022 ( REGULAR SERVICE - G12 ), ( LONG LIFE D12 ) ( NEXT GG ) ( THEN AC 86 ) ( LATEST D16 ) FROM FILES 1 Link to comment Share on other sites More sharing options...
Flivverking Posted September 22, 2022 Share Posted September 22, 2022 1931 Plymouth was a 4 banger right.. . plugs maybe similar to the model A Ford In size and range... maybe not as hot as un-informed model A-ers go for. Start with a simple easy to get autolite 3076 plug should do ok in the slightly over medium to warm/ hot range. Link to comment Share on other sites More sharing options...
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