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Old 09-27-2003, 05:09 PM   #1
Rivet Master
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Join Date: Sep 2003
Posts: 932
Question Onan 4k 1979 Oil Filter?

what is the correct filter for the generator in my 79? it is a Onan 4k green in color if that helps.


here is what i found

ONAN 1220323
stp or fram 3600
carquest 85762
wix 1762
my onan is a BFA A

always compare filter before using
I used the fram toughgaurd 3600 and it fit
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Old 09-27-2003, 05:37 PM   #2
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LOST , Hawaii
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Posts: 2,193
Go to Onan's site and click on Onan Parts. You will need the model and spec number, that should be on the generator tag.

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Old 09-28-2003, 07:50 AM   #3
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1966 26' Overlander
Woodstock , Georgia
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Posts: 8,525
I bought my filter at NAPA they have a big cross reference guide.It was 4 or 5 bucks. Mine is an 82 if it is heloful I will go and get the no. off it. Also a 4kw. NH series.
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