Fuel Fill Cap

[mxgeezer]

While on vacation this summer I lost my diesel fuel fill cap for my 2002 Tradewinds and I'm having no luck finding a new one. It's the round chrome cap (looks just like a marine deck fill cap) with the two holes on top that serve as a key. Mine is 1 3/4" thread diameter where marine caps are 1 1/2". I've tried everywhere I can think of: marine websites, RV websites, Spartan chasis, all to no avail. Anybody have any suggestions?

[BFlinn181]

This one isn't exactly as you describe, but it is a locking cap with 1 49/64" diameter threads. That's only 1/64" off of 1 3/4". The 1 49/64" seems to be a common size.

[mxgeezer]

Mine is the metal "deck fill" type cap with fine threads.
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