I'm struggling to find an expansion valve for my '58. Several vendors have new ones offered, but they are not correct -- ID/OD is wrong on both input and output fittings, and overall diameter is wrong. I"ve gotten parts listed as both AC/ Delco and 4 seasons equivalents.

Does anyone have the ability to look up the original p/n for me? Perhaps , with that, I can work to cross-reference the old part number to a new one.

Thanks gang.

 

The factory part number is 3139883 .

68 rocket action and I have a 1949 thru 1963 Olds chassis parts catalog for free download on this thread ;
https://classicoldsmobile.com/forums...dition-131501/

And the body;
https://classicoldsmobile.com/forums...dition-131503/

 

Thanks!