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Onan Parts

Cummins Onan Parts and GeneratorsCummins Power Systems' branches are staffed by factory trained parts and service personnel. In addition, all locations carry an extensive inventory of Cummins Onan parts to insure your generator is serviced as per Cummins Onan recommendations and downtime is minimized.  

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, including Cummins Power Systems.

Cummins Onan parts differ from "will-fit" parts

Don't settle for aftermarket or "will-fit" parts. Genuine Cummins Onan parts offer the durability and performance you have come to expect from Cummins Onan. They're the original. The following include some of the parts you'll become accustomed to checking and changing as part of your maintenance routine, as well as the reasons for choosing Cummins Onan 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 the entire 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.

For assistance with Cummins Onan parts, please contact a local Cummins Power Systems branch.