Genuine Onan diesel RV generator maintenance kit with Onamax oil, air filter, oil filter, and fuel filter for compatible HDKAH/HDKAK 8.0 QD generator models.
The Cummins Onan A060Z227 maintenance kit is designed for routine service on compatible Onan Quiet Diesel RV generators. It bundles the common service items needed for maintenance, helping RV owners keep the correct filters and oil together in one kit.
This kit is commonly listed for HDKAH and HDKAK 8.0 QD diesel RV generator models. Before ordering, confirm your generator model and spec letter from the generator nameplate to make sure this is the correct maintenance kit for your unit.
Includes three quarts of Cummins Onan Onamax oil for compatible service intervals
Includes replacement air filter 140-2897 for the listed generator applications
Includes replacement oil filter 122-0833 for routine generator maintenance
Includes replacement fuel filter 147-0860 for compatible diesel generator models
This maintenance kit is not universal for every Onan Quiet Diesel generator. It is commonly listed for HDKAH/HDKAK 8.0 QD diesel RV generator models, but compatibility should still be verified by generator model number and spec letter before ordering. Always follow the maintenance schedule and service procedures listed in your generator owner’s manual.
Before Starting: Shut down the generator, allow it to cool, and follow all Cummins Onan service precautions. Refer to the generator owner’s manual for the correct maintenance interval and service procedure. Basic Service Steps: 1. Confirm Compatibility: Verify the generator model, spec letter, and required maintenance parts before beginning service. 2. Prepare the Generator: Park safely, shut the generator off, and allow hot components to cool. 3. Drain Engine Oil: Drain used oil into an approved container according to the generator service instructions. 4. Replace Oil Filter: Remove the old oil filter and install the replacement filter as directed by the service manual. 5. Refill Oil: Add the correct amount and type of oil, then verify the oil level before running the generator. 6. Replace Air Filter: Remove the old air filter and install the replacement air filter in the correct orientation. 7. Replace Fuel Filter: Replace the fuel filter following diesel fuel system safety precautions. 8. Test Run: Start the generator, check for leaks, verify proper operation, and recheck oil level after shutdown if required.
Package Contents: • (3) Quarts Cummins Onan Onamax oil - 326-5336 • (1) Air filter - 140-2897 • (1) Oil filter - 122-0833 • (1) Fuel filter - 147-0860 NOT Included — May Also Need: • Drain pan • Filter wrench or service tools • Gloves, rags, or shop towels • Replacement drain plug gasket, if required • Additional oil, if your service procedure requires more than the included amount Check your generator manual before service to confirm oil capacity, maintenance interval, and any additional parts required.
To confirm compatibility before ordering, have the following ready: • Generator model number • Spec letter • Serial number • Current hourmeter reading • Existing filter part numbers, if available • Generator owner’s manual maintenance interval Why this matters: Onan maintenance kits are matched to specific generator families and service requirements. Verifying the nameplate and service interval helps ensure the correct filters and oil are used.
Match this kit by generator model and spec letter. Maintenance kits should not be selected by generator wattage alone.
Routine maintenance helps support generator reliability, especially before long trips, seasonal storage, or heavy RV power use.