I have the Onan 5500 Gold Marquis gas generator below model HGJAB - 1038D...In changing the oil I use 15w-40 oil so I use Rotella 15w-40 that I use on my diesel truck...Question is I need comparable oil filter to use as Onan will charge me $11 to ship a $9 oil filter...the Onan part # is 122-0836...is there a comparable oil filter out there that I can purchase at a local retail store??

Go to almost any auto parts store and give them the ONAN number and they will hand you a perfect fit with their brand of filter.JimL

Our local NAPA Auto parts has filters that cross reference to the Onan filters.

RognBon wrote:Our local NAPA Auto parts has filters that cross reference to the Onan filters.I agree. NAPA has them.

Napa or O"reillys have the Onan filters.Wix Filters

Here you go Clicky for 122-0836 filter cross reference.

ONAN OIL FILTER | Good Sam Community

12 Replies

kneal44
Explorer
Mar 11, 2014
go to filterbarn.com for filters... they have a zillion and will advise you on replacement filter number.

i get my filter for my onan at walmart.
Generator_Jim
Explorer
Mar 11, 2014
I've been running 15-40 Rotella in my gas powered microlite and I run 10-30 mobile 1 in my lp vapor microlite. Works fine.

JimL
pkunk
Explorer
Mar 10, 2014
The Wix 51516 is a longer filter that fits the 5500. Makes it much easier to tighten/remove as it sits about an inch outside the housing.
Kit_Carson
Explorer
Mar 10, 2014
Kit Carson wrote:
I don't guess my Onan Microquiet 4KW has an oil filter. I went out to look today and did not find one. Even looked in the book and the only filter mentioned was air filter. Hate to sound stupid but I guess it does not have one. If I should switch to synthetic oil do I need to do anything other than just drain all of the oil and replace with proper weight synthetic?
Should have said it is gas powered.
Kit_Carson
Explorer
Mar 10, 2014
I don't guess my Onan Microquiet 4KW has an oil filter. I went out to look today and did not find one. Even looked in the book and the only filter mentioned was air filter. Hate to sound stupid but I guess it does not have one. If I should switch to synthetic oil do I need to do anything other than just drain all of the oil and replace with proper weight synthetic?
darsben
Explorer II
Mar 10, 2014
+1 more for NAPA
aretus45
Explorer
Mar 10, 2014
Napa sells wix they have a large range on each filter make sure they fit and is the same micro filter
bamcote
Explorer
Mar 09, 2014
Here you go Clicky for 122-0836 filter cross reference.
enblethen
Nomad
Mar 09, 2014
Napa or O"reillys have the Onan filters.
Wix Filters
GORVN4FUN
Explorer
Mar 09, 2014
RognBon wrote:
Our local NAPA Auto parts has filters that cross reference to the Onan filters.

I agree. NAPA has them.