Service parts for the V12 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
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Air cleaner - oil bath | 612043 | Amazon eBay | ||
| Fuel filter | Throw-Away Type Fuel Filter | 6210009 | Amazon eBay | ||
| Oil filter | 63102 | 1000 hr | Amazon eBay | ||
| Battery | — | ||||
| Belt | Water Pump Belt — V8-350/VT8-430 Series | 710032 | Amazon eBay | ||
| Coolant | — | ||||
| Coolant filter | CHECK TURBOCHARGER BEARING CLEARANCES | — | 1000 hr | ||
| Oil | — | 1000 hr | |||
| Spark plug | — | 1000 hr |
Common questions
Which oil filter part number does the Cummins/Onan V12 Series take?
The Cummins/Onan V12 Series uses oil filter part number 63102.
What fuel filter does the Cummins/Onan V12 Series use?
The Cummins/Onan V12 Series uses fuel filter part number 6210009.
Which air filter part number does the Cummins/Onan V12 Series take?
The Cummins/Onan V12 Series uses air filter part number 612043.
Troubleshooting
1Fault codes
| Code | Meaning |
|---|---|
| loss | Loss of coolant |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Parts
58| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 49507035 | O-ring | Seal | Amazon eBay | |
| 5712965 | Fan, Fan Hub and Pulley — C & J Series (Standard) | Fan | Amazon eBay | |
| 5807030 | Water Pump — NHH Series | Water pump | Amazon eBay | |
| 5807938 | Bendix-Westinghouse | Air compressor | Amazon eBay | |
| 6010041 | Aneroid Control Valve | Sensor | Amazon eBay | |
| 6010042 | Air Compressor Counterweight Capscrew | Capscrew | Amazon eBay | |
| 6012040 | Fig. 2-34. Removing injector inlet screens | Injector | Amazon eBay | |
| 6012045 | V-12 (flywheel), valve set marks | Gasket | Amazon eBay | |
| 6052049 | oil flow regulator valve | Oil filter | Amazon eBay | |
| 612043 | Air cleaner - oil bath | Air filter | Amazon eBay | |
| 612049 | Air cleaner - composite dry type | Air filter | Amazon eBay | |
| 612052 | Air cleaner - centrifugal type | Air filter | Amazon eBay | |
| 6201274 | Installing Gear Driven Water Pump — V12 | Pump | Amazon eBay | |
| 6207178 | Cummins, Belt Driven | Belt | Amazon eBay | |
| 6207271 | PT Fuel Pump with MVS Governor | Pump | Amazon eBay | |
| 6210009 | Throw-Away Type Fuel Filter | Fuel filter | Amazon eBay | |
| 6210010 | CLEAN TURBOCHARGER COMPRESSOR WHEEL AND DIFFUSER | Turbocharger | Amazon eBay | |
| 6212033 | Thermostat — V6-Vim & V8-Vine | Thermostat | Amazon eBay | |
| 6212040 | V6-Val/V8-Vale | Gasket | Amazon eBay | |
| 6306044 | V6-Vim/V8-Vine (Mounted in Vee) | Gasket | Amazon eBay | |
| 6306049 | Installing Belt Driven, Front Drive Water Pump — V12 | Belt | Amazon eBay | |
| 6309064 | oil drain line | Fluid | Amazon eBay | |
| 6310083 | V-12 (flywheel), valve set marks | Gasket | Amazon eBay | |
| 6310170 | V-12 (water pump drive pulley), valve set marks | Gasket | Amazon eBay | |
| 63102 | Oil filter | Oil filter | Amazon eBay | |
| 6364034 | Installing Water Pump Pulley — NHH | Pump | Amazon eBay | |
| 6612051 | Installing Belt Driven, Rear Drive Water Pump — V12 | Belt | Amazon eBay | |
| 710032 | Water Pump Belt — V8-350/VT8-430 Series | Belt | Amazon eBay | |
| 712080 | Rocker Lever Assembly - C & J Series | Rocker lever | Amazon eBay | |
| 712081 | CYLINDER HEAD GASKET | Gasket | Amazon eBay | |
| 80190033 | Fan Hub Assembly — H/NH, V6, V8, V12 and L Series | Fan hub | Amazon eBay | |
| 807031 | Turbocharger — C, J, NH and L Series | Turbocharger | Amazon eBay | |
| 2-33 | Adjusting valves Fig. 2-33. Adjusting valves | Service part / kit | Amazon eBay | |
| 210021 | shim | Service part / kit | Amazon eBay | |
| 5807029 | MOUNTING GENERATOR | Service part / kit | Amazon eBay | |
| 5807068 | CHECKING CRANKSHAFT END CLEARANCE | Service part / kit | Amazon eBay | |
| 6010030 | CORROSION RESISTOR | Service part / kit | Amazon eBay | |
| 6010034 | capscrew | Service part / kit | Amazon eBay | |
| 6010045 | capscrew | Service part / kit | Amazon eBay | |
| 6012061 | MOUNTING AIR STARTER | Service part / kit | Amazon eBay | |
| 6030023 | Fig, 2-32. Crosshead | Service part / kit | Amazon eBay | |
| 6103179 | MANOMETER ADAPTER | Service part / kit | Amazon eBay | |
| 612047 | Comparator kit | Service part / kit | Amazon eBay | |
| 6201166 | retaining nut | Service part / kit | Amazon eBay | |
| 6207166 | capscrew | Service part / kit | Amazon eBay | |
| 6207184 | Fig. 2-35. Checking fuel manifold pressure | Service part / kit | Amazon eBay | |
| 6207186 | capscrew | Service part / kit | Amazon eBay | |
| 6210020 | Cumming Engine Company, Inc. | Service part / kit | Amazon eBay | |
| 6210022 | Cummins Engine Company, Inc. | Service part / kit | Amazon eBay | |
| 6210023 | Crosshead . Fig, 2-32. Crosshead | Service part / kit | Amazon eBay | |
| 6210039 | retainer ring | Service part / kit | Amazon eBay | |
| 6301016 | Cumming Engine Gompany, LNG. | Service part / kit | Amazon eBay | |
| 6303216 | flatwasher | Service part / kit | Amazon eBay | |
| 6303227 | lockwasher | Service part / kit | Amazon eBay | |
| 63040680 | Vibration damper alignment marks | Service part / kit | Amazon eBay | |
| 6712055 | Air inlet restriction gauge | Service part / kit | Amazon eBay | |
| 8010037 | mounting capscrews | Service part / kit | Amazon eBay | |
| 86302168 | stud nut | 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 Maintenance Manual Construction and Industrial Diesels 1965 (Cummins/Onan)