Filters for the onan's at napa

[truckin88 104]

I had a helluva a time finding an air filter for my 520-H, all WH/TORO dealers were out. I found that fram cross is a CA140, but all wally worlds and autozones dont carry that one.

So I figured one last try...NAPA...they supply mechanics and have good stock, plus their filters are by wix, who made the original onan filters

The oil

Onan 122-0800 is NAPA 1762

The Air is Napa 6094

I just thought this would help all esp when you are in a bind

Here is the cross reference guide

[gwgdog66 23]

Good info. I usually go through two air filters a season where I'm at (Oklahoma) this year I decided I'd get me a K&N with a pre cleaner. In the long run it will save me some $$ since I can clean it.

[04fxdwgi 0]

I had a helluva a time finding an air filter for my 520-H, all WH/TORO dealers were out. I found that fram cross is a CA140, but all wally worlds and autozones dont carry that one.

So I figured one last try...NAPA...they supply mechanics and have good stock, plus their filters are by wix, who made the original onan filters

The oil

Onan 122-0800 is NAPA 1762

The Air is Napa 6094

I just thought this would help all esp when you are in a bind

Here is the cross reference guide

Here are some others you can try

For the Air:

Purolator A12283

WIX 46094

For Oil:

Group7 V195

Purolator L10241

FRAM PH3614

Wix 51374

For Hydro:

Purolator L14670

Fram PH2844

Wix 51410

[Duvall 0]

Good info. I usually go through two air filters a season where I'm at (Oklahoma) this year I decided I'd get me a K&N with a pre cleaner. In the long run it will save me some $$ since I can clean it.

I thought I might warn you on the K&N air filters. Several years ago I was using the K&N filters with the prefilter for off road applications. After a couple weeks of use I pulled the air filter off for maintenance and noticed a very thin film of dirt on the intake tube of the engine.

These filters offer great performance and maintenance characteristics, but poor dirt filtration. The element in these filters is cotton with a open weave. The oil is used to help stop the dirt and not impede the airflow.

I know several other car fanatics that do not use these filters because of this. If you search around you will see the same.

Here is one example from a thread.

The best air filter study I know of is the ISO 5011 Duramax study. The subject engine is of little consequence since it's a test of filter efficiency.

The standard AC Delco OEM filter was 99.93% efficient to 2.5 microns. The K&N filter was the worst tested and was only 96.8% efficient. This was with a perfectly oiled K&N air filter. The efficiency of a K&N air filter drops off rapidly with use as they have exceptionally low dirt capacity. I think K&N only claims a 90% efficiency, but my memory may be off in this respect.

How much dirt could the filter hold before being clogged? The AC Delco OEM filter could hold 573.9 grams of dirt before being completely clogged. The K&N could only hold 211.6 grams. Less than half the capacity before clogging. An interesting note is that the only filter worse than the K&N was the Amsoil filter.

Accumulated gain... this is how much dirt the filter let pass during the test. The AC Delco OEM filter allowed 0.4 grams of measurable dirt to pass during the test. The K&N allowed a massive 7.0 grams of dirt to pass!

K&N makes their performance claims based on low air restriction. Without going into all the details this claim ONLY works IF the OEM filter is too restrictive. If the OEM filter will flow air equal to or greater than the CFM required by the engine NO PERFORMANCE GAIN IS POSSIBLE. I do not believe that there's a modern vehicle that can out breathe a clean OEM filter.

Now how does this result in lower engine life? Take a look at the accumulated gain paragraph above. Those additional 6.6 grams of dirt the K&N filter allowed to enter the engine will cause wear. Every bit of dirt that enters the cylinder adds up. Dirt is just as good as sandpaper over time. The result is guaranteed.

If you like to read here is the complete air filter test.

http://www.duramax-diesel.com/spicer/index.htm

Just looking out for you and your engine.

[gwgdog66 23]

I will keep an eye out on that. I'm glad now I got the "Sock" precleaner to put over the filter.

[Olratlr 25]

Thanks for the information Guys. :thumbs2: