Green Label Maintenance Parts
When reliability counts, insist on the real thing. From filters to tune-up kits, Genuine Cummins Onan Green Label Parts are made to exact product specifications to maximize the power output and life of your Cummins Onan RV generator. They are available from all certified Cummins Onan RV service and parts dealers. Maintenance parts can also be ordered online on the Cummins Onan Parts and Manuals Store.
Cummins Onan parts differ from "will-fit" parts
Air Filters
Genuine Cummins Onan air filters are designed with a special foam pre-cleaner, for use specifically in RV generators. Other manufacturers' air filters may contain a lighter density filter paper and the sealing surfaces may get hard and crack over time, allowing dirty air into the engine intake system. Over time it takes about a thimbleful of dirt to wear out piston rings and cylinders. (Replacement filters for some older models may not include the pre-cleaner.)
Spark Plugs
Genuine Cummins Onan spark plugs come gapped correctly from the factory for your RV generator engine. Spark plugs purchased from other sources come gapped for automotive engines, which are gapped much larger. When regapping, the ground strap must be bent and it may not cover all of the electrode which will reduce spark plug life.
Oil Filters
Cummins Onan RV oil filters feature valves that allow oil to bypass the oil filter during cold starts, or if the filter becomes plugged. Other manufacturers' oil filters often do not have bypass valves. As these "will-fit" filters trap debris, oil pressure starvation can occur, leading to high oil pressures, failed gaskets and even engine damage. Other "will-fit" oil filters do contain bypass valves but they do not determine at what PSI the valve opens. If the setting is too high, the filter's paper element can be damaged during a cold start rendering it useless, or cause oil starvation to the engine.
The replacement oil filter (part #122-0833) that I purchased for my Cummins Onan Quiet Diesel looks like the wrong size.
We hear this a lot! Filter #122-0833 has replaced filter #185-5801 and filter #185-5409. Despite the difference in outward appearance, it will fit your set and the oil ring will provide a proper seal.
Our nationwide network of Cummins Onan distributors and dealers can help you with parts and service to keep your Cummins Onan RV genset in peak condition. To find the location nearest you, call toll-free 1-800-888-6626 or use our Dealer Locator.
