Onan Emerald III Air Filter

July 31, 2011, 02:54:52 pm

Well, I serviced my Onan Emerald III (LP) this weekend. I ordered an equivalent WIX air filter to what my Onan repair book stated, Onan PN 140-1891 (Wix 42362 & Napa 2362 Air Filter: FleetFilter Secure Online Store). However, when I opened the air filter case, I discovered Onan PN 140-2379 (Save at RV Partscenter - RV Parts and Supply). As you can see, the main difference is the small pre-filter foam sock that is around the filter. Has anyone else experienced this? In doing more research, I can't seem to actually find an OEM Onan 140-1891, but I can find an OEM Onan 140-2379. It seems this may have replaced the 140-1891 which makes me wonder if Onan discovered some issue with the 140-1891 and instead started using the 140-2379 w/pre-filter. Anyone know?

Re: Onan Emerald III Air Filter

Reply #1 – July 31, 2011, 04:49:40 pm

The Onan 140-1891 has been replaced by the 140-2379 $11.86

Re: Onan Emerald III Air Filter

Reply #2 – July 31, 2011, 05:11:46 pm

Dave, thanks for the reply! What I'm really trying to figure out is if anyone knows why? I did the change out with the original replacement filter. If there's a problem with using that filter then I'll go ahead and change to the replacement PN.

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