I think the one on the left marked with a "5" on the glass bowl is possibly a 1946-1953 Dodge truck and marine unit, original part number "AC 9289".

Here's some pictures found on evilbay that look like a very close match, although the glass bowl sections is mounted slightly differently.

Edit Note: The pump halves mount together on yours with only 6 screws vs 10 on the one I found. Still similar design, but maybe not an AC pump???
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Last edited by Gdads51; 07/09/2026 1:11 PM. Reason: add edit note/fix pictures
~ Dan
1951 Chevy 3 window 3100
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"My Grandpa Carl's Truck and How it Became Mine"
1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver)
US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)