I have a 1990 B2200 that has a steering box with a stamp saying UB40 32920 JKC 441-07735 and I am looking for the pitman arm, however every where I find it, it doesn't fit. The arm they have at the store (including eBay, AutoZone, O'reilly and several local stores) is slightly smaller, both the ball joint as well as the spline diameter is smaller, and it doesn't fit in the box. At AutoZone the manager helped me check out and we looked through Mazda's from 80's and 90's. B2200, B2300, B3600, 4x2, 4x4, Rangers and Bronco 2, and we were unable to find any matches.

Might anyone know the correct pitman arm for this particular steering box? UB40 32920 JKC 441-07735
Additionally under my ownership, that's the box it came with, so I am unsure if it any owner previously switched it out.

In advance, thank you very much

 

I had the exact same issue with my 88. I just checked my 88 steering box and the code is 441-07715, not 07735. When I had the problem I found an arm made by Delphi for $32 at PartsGeek. The part was 17640-05700168. So I just did a quick check at PartsGeek and when I change the year to 1990 I get a bunch of pitman arm hits and the Delphi version does indeed have a different part number (17642-05700168). Maybe just try one of the versions from PartsGeek? Seems like they have them and their algorithm worked for me. Good luck - you're going to enjoy that truck a lot more with steering!