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
6Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| Coolant Loss - External | Coolant level is above specification | Check the coolant level. Refer to Procedure 008-066 (Coolant Level) in Section 3. |
| Coolant Loss - External | External coolant leak | Inspect the engine for coolant leaking from hoses, draincocks, water manifold, expansion and pipe plugs, fittings, radiator core, exhaust heat shield, heat exchanger, air compressor and cylinder head gaskets, lubricating oil cooler, water pump seal, and OEM-mounted components that have coolant flow. |
| Coolant Loss - External | Radiator cap is not correct, is malfunctioning, or has low-pressure rating | Check the radiator pressure cap. Refer to the OEM service manual. |
| Coolant Loss - External | Fill line or vent lines are restricted, obstructed, or not routed correctly | Check the vent lines and the fill line for correct routing and for restriction. Refer to OEM specifications. |
| Coolant Loss - External | Coolant fill line is restricted or obstructed | Check the coolant fill line for restrictions or obstructions. Refer to the OEM installation instructions. |
| Coolant Loss - External | Engine is overheating | Refer to Coolant Temperature Above Normal symptom tree. |
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 (132 entries) →
Parts
19| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 03100050 | Overhead Set | 1 | Gasket | Amazon eBay |
| 03100052 | Crosshead Adjusting Screw Lock Nut | 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 eBay | |
| 03100066 | Rocker Lever Cover | Gasket | Amazon eBay | |
| 03100068 | Rocker lever cover gasket | 1 | Gasket | Amazon eBay |
| 05900825 | Air/fuel mixer valve | 1 | Air filter | 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 | |
| 03100067 | Rocker Lever Cover | 5 | Service part / kit | Amazon eBay |
| 03100069 | Rocker Lever Cover | Service part / kit | Amazon eBay | |
| 06400190 | Air/fuel mixer power valve | 1 | Service part / kit | 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 eBay $174.95 KuduParts $359.00 FridayParts $368.60 |
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
This page was generated from the 2 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.