Service parts for the 12.5JC-3CR
Grouped by system, with how many of each the parts manual calls for.
Air intake
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Fuel | Gasoline |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 12.5 kW |
| Voltage options | 120/240 V |
| Phase | 1 |
Maintenance & consumables
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Cleaner, Air - Includes Element And Baffle | 140-0721 | Amazon eBay $12.13 |
Common questions
How many kW is the Cummins/Onan 12.5JC-3CR?
The Cummins/Onan 12.5JC-3CR is rated 12.5 kW standby.
What fuel does the Cummins/Onan 12.5JC-3CR use?
The Cummins/Onan 12.5JC-3CR runs on Gasoline.
What voltage does the Cummins/Onan 12.5JC-3CR produce?
The Cummins/Onan 12.5JC-3CR is offered in 120/240 V, 1-phase.
What air filter does the Cummins/Onan 12.5JC-3CR use?
The Cummins/Onan 12.5JC-3CR uses air filter part number 140-0721.
Parts
45| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 140-0645 | Adapter, Air Cleaner Hose | 1 | Air filter | Amazon eBay |
| 140-0721 | Cleaner, Air (Includes Element And Baffle) | 1 | Air filter | Amazon eBay $12.13 |
| 140-0723 | Pre-Cleaner, Air Cleaner | 1 | Air filter | Amazon eBay $139.00 |
| 140-0740 | Tube, Air Cleaner | 1 | Air filter | Amazon eBay |
| 140-0765 | Element, Air Cleaner | 1 | Air filter | Amazon eBay $12.13 |
| 140-1271 | Elbow, Rubber - Air Cleaner | 1 | Air filter | Amazon eBay |
| 141-0697 | Seal, Felt | 1 | Seal | Amazon eBay |
| 141-0748 | Kit, Carburetor Gasket | 1 | Gasket | Amazon eBay |
| 148-0367 | Switch, Vacuum | 1 | Sensor | Amazon eBay |
| 155-0949 | Tube, Exhaust - Flexible | 1 | Hose | eBay |
| 191-0506 | Seal, Dirt - Starter | 1 | Seal | eBay |
| 300-1654 | Board, Voltage Regulator | 1 | Avr | eBay |
| 309-0162 | Switch, High Air Temperature | 1 | Sensor | Amazon eBay |
| 309-0206 | Component 309-0206 | 1 | Sensor | Amazon eBay |
| 309-0270 | Thermostat, Low Engine Temperature | 1 | Thermostat | Amazon eBay |
| 331-0103 | Grommet, Hose (Regulator to Carburetor) | 1 | Seal | eBay |
| 502-0002 | Elpow, Street - Fuel Pump 2 | 1 | Fuel pump | Amazon eBay |
| 502-0020 | Elbow, Street - Fuel Pump Inlet | 1 | Fuel pump | Amazon eBay |
| 503-0330 | Hose, Air Cleaner Connector | 1 | Hose | Amazon eBay |
| 503-0419 | Elbow, Rubber - Air Cleaner | 1 | Hose | Amazon eBay |
| 504-0007 | Valve, Fuel Pump Inlet | 1 | Fuel pump | Amazon eBay |
| 102-0549 | Base, Oil | 1 | Service part / kit | Amazon eBay |
| 134-1805 | Duct, Air | 1 | Service part / kit | Amazon eBay |
| 141-0747 | Kit, Carburetor Repair | 1 | Service part / kit | Amazon eBay |
| 154-1224 | Manifold, Intake | 1 | Service part / kit | eBay FridayParts $299.99 |
| 154-1805 | Duct, Air | 1 | Service part / kit | eBay |
| 155-0360 | Muffler, Critical | 1 | Service part / kit | Amazon eBay $525.00 |
| 232-2589 | Regulator Filter Package - (For Complete Replacement) | 1 | Service part / kit | eBay |
| 307-0655 | Holder, Indicator Lamp | 1 | Service part / kit | Amazon eBay |
| 307-1129 | Relay, Overspeed | 1 | Service part / kit | eBay |
| 307-1143 | Relay, Generating | 1 | Service part / kit | Amazon eBay |
| 307-1519 | Relay - High Air Temperature And Overspeed | 1 | Service part / kit | buy |
| 320-0104 | Relay, Low Oil Pressure | 1 | Service part / kit | Amazon eBay $255.00 |
| 320-0259 | Limiter, Cranking | 1 | Service part / kit | eBay |
| 321-0146 | Fuse - 10 Amp. | 1 | Service part / kit | Amazon eBay |
| 321-0175 | Holder, Fuse | 1 | Service part / kit | Amazon eBay |
| 322-0004 | L8mp Incandescent (12 VDC) | 1 | Service part / kit | Amazon eBay |
| 322-0069 | Holder, Indicator Lamp | 1 | Service part / kit | Amazon eBay |
| 323-0760 | Socket, Generating Relay | 1 | Service part / kit | eBay |
| 332-0604 | # Block, Terminal (T26) | 1 | Service part / kit | Amazon eBay |
| 332-0616 | Strip, Marker - 5 Place | 1 | Service part / kit | Amazon eBay |
| 502-0053 | 50!5-0057 0ESCRIPTIU4 W~#mi, Flat Copper (5/16” | 1 | Service part / kit | Amazon eBay |
| 505-0002 | Nipple, Oil Drain | 1 | Service part / kit | Amazon eBay |
| 505-0098 | Band | 1 | Service part / kit | Amazon eBay |
| 517-0012 | Plug, Dot Button - 5/8" | 1 | Service part / kit | buy |
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
Reference — JC Special Parts List - JC 12276AA-12864AA (Cummins/Onan)Parts manual — 967-0220 Onan JC spec A-AB Genset Parts manual 03-2012 (Cummins/Onan)Parts manual — JC Special Parts List - JC 11884AB-12276AA (Cummins/Onan)Parts manual — JC Special Parts List - JC 12892AA-13762AB (Cummins/Onan)Parts manual — JC Special Parts List - JC 13795-14910AA (Cummins/Onan)Parts manual — JC Special Parts List - JC 14925AA-15813AA (Cummins/Onan)Parts manual — JC Special Parts List - JC 15815AA-16328AA (Cummins/Onan)Parts manual — JC Special Parts List - JC 16345-16689AA (Cummins/Onan)Parts manual — JC Special Parts List - JC 16706AA-17282AA (Cummins/Onan)Parts manual — JC Special Parts List - JC 17300AA-17901AA (Cummins/Onan)Parts manual — JC Special Parts List - JC 17901AA-18500AA (Cummins/Onan)Parts manual — JC Special Parts List - JC 18503AA-19382AA (Cummins/Onan)Parts manual — JC Special Parts List - JC 19410-20354AB (Cummins/Onan)Parts manual — JC Special Parts List - JC 1AB-2468AA (Cummins/Onan)Parts manual — JC Special Parts List - JC 20364AA-21225AA (Cummins/Onan)Parts manual — JC Special Parts List - JC 21601AB-22632AB (Cummins/Onan)Parts manual — JC Special Parts List - JC 2468AB-5811AA (Cummins/Onan)Parts manual — JC Special Parts List - JC 5811AA-8489AA (Cummins/Onan)Parts manual — JC Special Parts List - JC 8489AA-9597AB (Cummins/Onan)Parts manual — JC Special Parts List - JC 9605AA-10626AA (Cummins/Onan)
This page was generated from the 20 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.