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Genuine Cummins Onan Oil filter # 122-0645 (New # 0122-0645) fits Most Onan RV Gensets with horizontally opposed twin cylinders. Also Onan engine models B43, B48, P216 P216, 218, 200 & 600 series engines.
In most cases you can substitute the slightly longer 122-0800 filter
Consult your manual or contact us if you are not sure.
Note: Since Cummins owns Fleetguard filters, these filters are labeled as such, but are still OEM.
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