Quote:
Originally Posted by DavidG
With respect, all '32-'34 cups were one-piece steel stampings. 48-4520-A1 and 48-4520-A2 are the two versions of the two-piece caps released for the '35 model year. The cast version (not forged) has the part number cast in on one half. When a part number has a number following its letter suffix, that indicates a different supplier and normally a different design with the same functionality and therefore the same basic part number. It is one of the telltales of the Ford part numbering system that has remained more or less unchanged in terms of its basics for 98 years.
It could a regional thing as I've never thought of the cast ones as particularly uncommon.
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I’d like to respectfully add a bit more information to this discussion as is often done in these parts discussions. Attached are 2 pictures of part number B-4514 clamshells I’ve had (have) in my parts inventory. Thank you, Paul J.