Here's what I ended up finding...
Westinghouse recommended replacement part 751-12690 specs...
Thread size: 3/4-16, Gasket ID: 2.173", Gasket OD: 2.475". Bypass PSI: 8
WIX 57890 matches the specs & looks to match exactly to the recommended replacement, however that replacement # is is alot shorter than the original that came on the unit at only 2.11". This obviously means less filter media = not a good thing. I don't have the length/height of the original, but it was quite a bit longer. Having said that, I've been using the 57890 for the past couple changes without any issue, but more media in the largest workable filter is better, so... I did more searching and found WIX 51395 has all the exact same specs, but is 2.997" long/high. This is it! BUT... It's a bit pricey and not always in stock @ Oreilly's Auto Parts who carries WIX. With this info, you can cross-reference to whatever you want. You'll find that both the 57890 & 51395 crosses to very common small engine filters and that's more evidence that these are good to go.
https://www.oilfilter-cro....com/convert/Wix/51395 BTW... If you value your metal, you will never use a Fram oil filter! Trust me, they are garbage. Fram is not the filter it used to be. Do some research and you'll see what I'm talking about here. I used to swear by them, but that was 20 years ago. Some of their filters are made "decent", but their build quality varies ALOT and their QC is non-existent. If you can't afford good fluids & parts, then you can't afford the equipment.
Lastly... The correct spark plug is NGK's BPR6ES / 7131 gapped @ 0.030". Get those crappy OEM "Torch" brand out of there ASAP! They will fail. The ceramic on the tip WILL disintegrate and fall into your combustion chamber. If I have to explain what happens next, then just never mind. You'll find out soon enough.
post edited by JayVee - 2022/05/08 13:54:39