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Cummins Onan Generator OnaMax 15W-40 - 326-5336

Cummins Onan Generator OnaMax 15W-40 - 326-5336



Genuine Cummins OnaMax  326-5336

1 Quart bottle of OnaMax 15W-40 engine oil formulated to reduce consumption and engine wear. 

Cummins Onan Green Label parts and fluids are tested and designed specifically for RV generator applications. “Will-fit” parts and gaskets can be the correct shape, but because of inadequate design, the wrong material, or poor quality, they could cause premature failure, leakage, or performance problems. Please refer to your Operator’s Manual for specific maintenance intervals.

RV Green Label Parts Reference Guide

How to find your Model & Spec Number


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