Service parts for the G855 Series Engine
Grouped by system, with how many of each the parts manual calls for.
Air intake
1 requiredBelts
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
Ratings spec sheet not in our library yet — see the documents below.
Maintenance & consumables
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Air/fuel mixer valve | 05900825 | Amazon eBay | ||
| Belt | Drive Belt, Cooling Fan | 17900012 | Amazon eBay |
Common questions
Which air filter part number does the Cummins/Onan G855 Series Engine take?
The Cummins/Onan G855 Series Engine uses air filter part number 05900825.
Troubleshooting
6Fault codes
| Code | Meaning |
|---|---|
| TS-6 | Engine Decelerates SIOWLY |
| TS-7 | Engine Difficult to Start or Will Not Start |
| TS-8 | Engine Noise ExCeSSive |
| TS-9 | Engine Power Output LOW |
| TS-10 | Engine RUns Rough at Idle |
| TS-11 | Engine Runs Rough or Misfires |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing. Full Cummins/Onan G855 Series Engine troubleshooting guide (26 entries) →
Parts
19| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 03100050 | Rocker lever cover gasket | 1 | Gasket | Amazon eBay |
| 03100052 | Rocker lever cover gasket | 1 | Gasket | Amazon eBay |
| 03100056 | Rocker lever cover gasket | 1 | Gasket | Amazon eBay |
| 03100058 | Overhead Set | Overhead set | Amazon eBay | |
| 03100063 | Rocker Lever Cover | Rocker lever cover | Amazon eBay | |
| 03100064 | Rocker Lever Cover | Rocker lever cover | Amazon eBay | |
| 03100066 | Rocker Lever Cover | Rocker lever cover | Amazon eBay | |
| 03100067 | Rocker Lever Cover | 5 | Rocker lever cover | Amazon eBay |
| 03100068 | Rocker lever cover gasket | 1 | Gasket | Amazon eBay |
| 03100069 | Rocker Lever Cover | Rocker lever cover | Amazon eBay | |
| 05900825 | Air/fuel mixer valve | 1 | Air filter | Amazon eBay |
| 06400190 | Air/fuel mixer power valve | 1 | Power valve | Amazon eBay |
| 06600154 | Air cleaner tube | 1 | Air cleaner | Amazon eBay |
| 06600155 | Air cleaner tube | 1 | Air cleaner | Amazon eBay |
| 10200031 | Fan, Cooling | Fan | Amazon eBay | |
| 17900012 | Drive Belt, Cooling Fan | Belt | Amazon eBay | |
| 08100061 | Lower radiator water transfer tube (Engine Inlet) | Service part / kit | Amazon eBay | |
| 08100062 | Upper radiator water transfer tube (Engine Outlet) | Service part / kit | Amazon eBay | |
| 3376592 | Inch Pound Torque Wrench | 1 | Service part / kit | Amazon $380.14 eBay $174.95 KuduParts $359.00 |
Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.
Available documents
Service manual — Cummins Diesel G855 Manual 2006 (2) (Cummins/Onan)Service manual — Cummins Gas G855 Manaul 2004 (2) (Cummins/Onan)