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Old 12-14-2015, 12:58 PM   #1
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8 KW Diesel generator oil filter question

On my past 8KW diesel generator any time I couldn't get to a Cummins shop for an Onan oil filter no. 122-0833 I could always use a Wix 51064 filter.
But for the initial 50 hour change on my 2015 Newmar the original filter I removed was just solid gray in color and had no markings whatsoever on it. So being over 100 miles from the nearest Cummins shop I bought a Wix 51064, which does cross reference to the 122-0833. But the Wix is about 1/2" larger in diameter and 1/4" taller and there just flat isn't enough room for it to fit in the space where the original filter was even though it worked fine on my past Onan.
I have used NAPA filters in the past so I went there but even though the one they sold me is the same size as the original the threads are different, fine instead of course like the original.
I called the Cummins Onan hot line and talked to the parts department which told me the 122-0833 is definitely the correct filter for my generator but that didn't help my current problem.
Anyone else had to face this problem, and if so did you find a solution, other than somehow getting an Onan filter?

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Old 12-14-2015, 01:08 PM   #2
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Fram PH 3593A should work

Myron & Deborah
08 HR Endeavor 40 SKQ
2012 Ford Edge Limited FWD 3.5L
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Old 12-14-2015, 01:14 PM   #3
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Thanks for that information. I've used the top of the line Fram on my Wrangler.
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Old 12-14-2015, 02:14 PM   #4
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The possible size difference is noted in my QD8000 manual. It's more common to find that the replacement is larger but the last filter that I got from Cummins was a Kubota that was the size of the factory installed filter.

BTW, If your are not aware, Kubota makes the QD engine.
2012 Phaeton 36QSH
2007 Wrangler Toad
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diesel, generator

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