Looking for a little help finding the clear caps for my trailer. It's a homemade job with no clear markings. One of the caps has no marking and the other one only says Al-KO and has the oil level line. The threaded part is about 2.75" across the threads. I went to my local Napa and they only carry dexter caps and they have a finer thread than mine. Look on the interweb so far and only can find AL-KO ones that are 3.75". If I had to venture aguess i would say its a 7,000 axle. Any tip would be appreciated.
Take a look at these. They list the outside thread diameter at 2.75": AL-KO Oil Cap Kit, Screw-On For 7K-8K Al-ko Axles, 1997 And Newer, (K71-845-00) | Brechbill Trailer Parts Good luck!