Originally Posted By: blupupher
If you are wanting a little bigger filter, the Fram PH4386 is a little longer and almost identical gasket size, or the PH3600 that is 2" longer and has a regular dome end bypass in the ST lineup (but has a slightly larger gasket, not sure how big the filter mount plate is on the generator).
The mounting plate would accommodate a 3600 filter, but there is no room for it. Length is no problem but there is a bracket that won't allow a thicker filter. I believe the 4386 would fit, just looking at it it seems that it is the same diameter as 4967 but a bit longer. I have another Napa ProSelect 21394 in my stash and after that I will try a 4386.