Many ONAN Generator Engines.
Napa FIL 7398
What vehicle does it fit on
Napa oil filters fit many different vehicles.
Ph10027
Mainly GM vehicles.
They are most commonly used on Chevy s10s with the 4.3 Vortec motor. It has the same thread pattern as the Napa 1040 but is a bigger filter.
7398 x 789 = 5,837,022
NAPA 21372
It fit my 1999 4.8L gmc serria and 2006 gmc envoy 4.2L
onan marquis 5500 generator
They sell NAPA Gold filters that fit many different cars.
Generally fits GM cars with 3.8 V6 engines from mid 1990's to mid 200's