Service parts for the G8.3 Series
Grouped by system, with how many of each the parts manual calls for.
Air intake
1 requiredFuel system
1 requiredOil system
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
for the Cummins/Onan G8.3| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Air Cleaner Element, Paper Type | 05e00014 | Amazon eBay | ||
| Fuel filter | NG | 05900828 | 250 hr | Amazon eBay | |
| Oil filter | 3375049 | 1500 hr | Amazon eBay | ||
| Battery | — | ||||
| Belt | Belt tension gauge, click type (v-belts‘and v-ribbed with 4 or 5 ribs) | 3822524 | Amazon eBay | ||
| Coolant | — | ||||
| Coolant filter | — | 1500 hr | |||
| Oil | — | 250 hr | |||
| Spark plug | — | 1500 hr |
Common questions
Which engine powers the Cummins/Onan G8.3 Series?
The Cummins/Onan G8.3 Series is powered by the Cummins/Onan G8.3 engine.
What oil filter fits the Cummins/Onan G8.3 Series?
The Cummins/Onan G8.3 Series uses oil filter part number 3375049.
What fuel filter does the Cummins/Onan G8.3 Series use?
The Cummins/Onan G8.3 Series uses fuel filter part number 05900828.
What air filter does the Cummins/Onan G8.3 Series use?
The Cummins/Onan G8.3 Series uses air filter part number 05e00014.
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 G8.3 Series troubleshooting guide (103 entries) →
Parts
33| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 05200007 | Fuel Filter, NG | Fuel filter | Amazon eBay | |
| 05600009 | Radiator Hoses | Hose | Amazon eBay | |
| 05e00014 | Air Cleaner Element, Paper Type | Air filter | Amazon eBay | |
| 08900217 | Low-Temperature Aftercooler (LTA) Water Pump | Pump | Amazon eBay | |
| 08900239 | Low-Temperature Aftercooler (LTA) Water Pump | Pump | Amazon eBay | |
| 08900241 | Coolant Filter | Filter | Amazon eBay | |
| 08900244 | Gasket, Low-Temperature Aftercooler (LTA) Water Pump | Gasket | Amazon eBay | |
| 08900245 | Rubber Impeller Cap, Low-Temperature Aftercooler (LTA) Water Pump | Impeller | Amazon eBay | |
| 13400046 | Spark Plug | Spark plug | Amazon eBay | |
| 17900012 | Drive Belt, Cooling Fan | Belt | Amazon eBay | |
| 3163099 | Belt tension gauge, click type (v-belts‘and v-ribbed with 4 or 5 ribs) | Belt | Amazon eBay | |
| 3163196 | torque wrench adapter | Adapter | Amazon eBay | |
| 3163292 | Belt tension gauge, click type (v-belts‘and v-ribbed with 4 or 5 ribs) | Belt | Amazon eBay | |
| 3164204 | Belt tension gauge, click type (v-belts‘and v-ribbed with 4 or 5 ribs) | Belt | Amazon eBay | |
| 3164486 | Belt tension gauge, click type (v-belts‘and v-ribbed with 4 or 5 ribs) | Belt | Amazon eBay | |
| 3164488 | Digital Multimeter Measure voltage on electrical equipment | Belt | Amazon eBay FridayParts $505.58 | |
| 3164491 | Belt tension gauge, click type (v-belts‘and v-ribbed with 4 or 5 ribs) | Belt | Amazon eBay | |
| 3164498 | Belt tension gauge, click type (v-belts‘and v-ribbed with 4 or 5 ribs) | Belt | Amazon eBay | |
| 3375049 | Oil Filter Wrench | 1 | Oil filter | Amazon eBay |
| 3376589 | Belt tension gauge, click type (v-belts‘and v-ribbed with 4 or 5 ribs) | Belt | Amazon eBay | |
| 3822524 | Use on v-belts ( 3/8 to 7/8) and v-ribbed belts with 5 ribs or less. | 1 | Belt | Amazon eBay |
| 3822525 | Use on v-beits larger than 7/8 in. and v-ribbed belts with 6 or more ribs. | 1 | Belt | Amazon eBay |
| 3823921 | Belt tension gauge, click type (v-belts‘and v-ribbed with 4 or 5 ribs) | Belt | Amazon eBay | |
| 3823983 | Belt tension gauge, click type (v-belts‘and v-ribbed with 4 or 5 ribs) | Belt | Amazon eBay | |
| 3824876 | Belt tension gauge, click type (v-belts‘and v-ribbed with 4 or 5 ribs) | Belt | Amazon eBay FridayParts $156.45 | |
| 9800wa | Sealing O-Ring, Air/Fuel Mixer | O ring | Amazon eBay | |
| Q5e00009 | Radiator Hoses | Hose | Amazon eBay | |
| oi900sb | Cooling Fan Belt Tensioner | 1 | Belt | Amazon eBay |
| 0500007 | filter cover | Service part / kit | Amazon Amazon eBay | |
| 3376592 | Inch Pound Torque Wrench | 1 | Service part / kit | Amazon eBay $174.95 KuduParts $359.00 FridayParts $368.60 |
| 3822735 | Plastic bead blasting media | 1 | Service part / kit | Amazon eBay |
| 3824510 | Cummins electronic cleaner | 1 | Service part / kit | Amazon eBay |
| oj900sb | Crankcase Breather Tube | 1 | Service part / kit | Amazon eBay |
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 G8.3 Manual 2004 (Cummins/Onan)
This page was generated from the 1 manufacturer document above by automated extraction; every figure shown is copied from one of them. How the data is compiled.