Here is what I have found so far.
Mobil1= M1-209
WIX= 51516
FRAM= PH3600
A/C DELCO= PFL400A
PUROLATOR= L20195
Mobil1= M1-209 WIX= 51516 FRAM= PH3600 A/C DELCO= PFL400A PUROLATOR= L20195
Looks like wix does not do this filter as of yet.
Wix WA10555
Wix 57145Six 57145XP
Wix 46033. Www.Wixfilters.com
WIX 51068 Fram PH43
Wix 51348
The only cross to the Generac filter is a Wix 49227. Costs between 7.99 to 16.99 online. Don't throw away outer pre-filter (OC3040) wrap. Reuse pre-filter by just cleaning it with soap and water, rinse and dry.
WIX - Oil FilterPart # 57145
That number, 513211, interchanges to a WIX 51374.
I have found a filter, available from NAPA, which seems to match perfectly. NAPA's part number is 7181; the WIX number is 57181.
NAPA 5010