ONAN GENERATOR / LAWN MOWER OIL FILTERS 122-0645 & 122-0406 have the following cross referenced filters:
BAD BOY 063-2010-00
BAD BOY 063-5400-00
BOBCAT I.R. 6513601
BOBCAT I.R. 6652366
BRIGGS & STRATTON 4153
BRIGGS & STRATTON 491056
BRIGGS & STRATTON 491056S
CASE C26191
GRASSHOPPER 100802
GRAVELY 042366
JACOBSEN 5000440
JOHN DEERe AM101207
KOHLER 52 050 02
KOHLER 52 050 02-S
ONAN 122-0645
TORO NN10147
TORO 491056
TORO 52 050 02-S
WOODS 70939
Sears parts show a cross reference for this part. They tend to rip you off on shipping charges, but it is the only place I have seen a listing. Al Jones
What is the fram oil filter cross reference for onan oil filter 1220893
1492341
Fram PH3614
Most cross to a Fram PH 7575
That would be a Fram CA8235
That would be a WIX 42362
Fram CA140
There are several places you can find a cross reference guide for Onan oil filters. Most auto parts stores will have reference guides. Many department stores like Walmart, Sears or Target will also have them.
I just took the onan number along with old filter for sight comparison and the NAPA guy got me a Napa Gold filter no. for my 6000w easily and twice as cheap !!!
The FRAM PH3614 is the oil fiter that cross references with the Onan 122-088 that was installed in the unit. It is half as long as the Onan 122-0800 that is recommended by Onan and actually removed from the engine for replacement. The way the engine cowling is bullt, that means that the oil filter cannot be screwed in or removed because it wsill set too deep in the cavity to get fingers or an oil filter wrench into it.
Napa FIL 7398
i found it on ngk #2238