Service parts for the 15.0RJC
Grouped by system, with how many of each the parts manual calls for.
Fuel 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
| Fuel | Gasoline |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 15 kW |
| Standby kVA | 15 |
| Voltage options | 120/240 V, 120/208 V, 277/480 V, 347/600 V |
| Phase | 1 |
| Circuit breaker | 4 A |
Maintenance & consumables
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Fuel filter | Fuel System | 123-0865 | Amazon eBay $23.69 | ||
| Oil filter | Oil Filter | 122-0185 | Amazon Amazon eBay $19.55 eBay NAPA $12.88 | ||
| Belt | Spring, Governor - Begin Spec R | 150-1085 | Amazon eBay |
Common questions
What is the power rating of the Cummins/Onan 15.0RJC?
The Cummins/Onan 15.0RJC is rated 15 kW standby (15.0 kVA).
What kind of fuel does the Cummins/Onan 15.0RJC run on?
The Cummins/Onan 15.0RJC runs on Gasoline.
What voltage does the Cummins/Onan 15.0RJC produce?
The Cummins/Onan 15.0RJC is offered in 120/240 V, 120/208 V, 277/480 V, 347/600 V, 1-phase.
What oil filter does the Cummins/Onan 15.0RJC use?
The Cummins/Onan 15.0RJC uses oil filter part number 122-0185.
What fuel filter does the Cummins/Onan 15.0RJC use?
The Cummins/Onan 15.0RJC uses fuel filter part number 123-0865.
Parts
61| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 120-0547 | Pump Assembly, Oil | 1 | Pump | Amazon eBay $295.00 |
| 120-0562 | 1 Gasoline Sets - Spec A through N | 1 | Hose | Amazon eBay |
| 120-0580 | Gasket Kit, Oil Pump | 1 | Gasket | Amazon eBay |
| 120-0628 | 2 Line, Oil - Rocker Cover 26 | 1 | Fluid | Amazon eBay |
| 122-0185 | Oil Filter | 1 | Oil filter | Amazon Amazon eBay $19.55 eBay NAPA $12.88 |
| 122-0188 | Gasket, Oil Adapter | 1 | Gasket | Amazon eBay |
| 122-0193 | Filter (5-1/2" Long) - Optional | 1 | Oil filter | Amazon eBay $18.32 NAPA $10.64 |
| 123-0649 | 1 Tube, Oil Fill | 1 | Fluid | Amazon eBay |
| 123-0667 | 1 Gasket | 1 | Gasket | Amazon eBay |
| 148-0363 | Pressure Reducing | 1 | Pressure reducing | Amazon eBay |
| 149-0625 | Fuel Strainer | 1 | Fuel strainer | Amazon eBay |
| 149-1244 | Electric Shutoff Valve | 1 | Electric shutoff valve | Amazon eBay |
| 150-0862 | Spring, Governor - Spec A through Q | 1 | Belt | Amazon eBay |
| 150-1085 | Spring, Governor - Begin Spec R | 1 | Belt | Amazon eBay |
| 800-0501 | Starter | 1 | Starter | Amazon eBay |
| 102-0476 | 1 Spec A through H | 1 | Service part / kit | Amazon eBay |
| 104-0460 | Crankshaft Spec A through AB | 1 | Service part / kit | Amazon eBay |
| 104-0510 | Gear, Crankshaft | 1 | Service part / kit | Amazon eBay |
| 104-0543 | Flywheel | 1 | Service part / kit | Amazon eBay |
| 104-0957 | Washer, Gear Retainer | 1 | Service part / kit | Amazon eBay |
| 104-1362 | Crankshaft - Begin Spec AC | 1 | Service part / kit | Amazon eBay |
| 105-0205 | 1 Washer, Thrust Gear 5 | 1 | Service part / kit | Amazon eBay |
| 105-0218 | 1 Begin Spec B 12 | 1 | Service part / kit | Amazon eBay |
| 105-0240 | 1 Spec A through N | 1 | Service part / kit | Amazon eBay |
| 105-0275 | Camshaft - Begin Spec P | 1 | Service part / kit | Amazon eBay |
| 110-0859 | 8 Cap, Valve Stem 11 | 4 | Service part / kit | Amazon eBay FridayParts $124.86 |
| 110-1214 | Insert, Valve Seat Intake, Gasoline | 4 | Service part / kit | Amazon eBay |
| 110-1225 | 10 Screw (3/8-16 x 4-3/4"), Cylinder Head 28 | 1 | Service part / kit | Amazon eBay |
| 110-1343 | Head Assembly, Cylinder | 2 | Service part / kit | Amazon eBay |
| 110-1416 | Gasoline Sets | 2 | Service part / kit | Amazon eBay |
| 112-0086 | Ring Set, Piston Standard | 4 | Service part / kit | Amazon eBay |
| 112-0172 | Piston Kit (Includes Pin and Retaining Rings) - Gasoline, Gas-Gasoline, LPG and Standard Natural Gas Sets | 4 | Service part / kit | Amazon eBay |
| 112-0174 | Bearing half, Connecting Rod | 4 | Service part / kit | Amazon eBay $220.00 |
| 113-0107 | 4 Standard | 4 | Service part / kit | Amazon eBay $22.99 |
| 114-0163 | Piston and Pin | 4 | Service part / kit | Amazon eBay |
| 114-0164 | BEARING HALF, CONNECTING ROD | 2 | Service part / kit | Amazon eBay |
| 115-0128 | 4 . Exhaust | 1 | Service part / kit | Amazon eBay |
| 115-0129 | 4 Intake 14 | 1 | Service part / kit | Amazon eBay |
| 120-0539 | Valve, Oil By-Pass | 1 | Service part / kit | Amazon eBay $17.50 |
| 120-0555 | Bracket, Oil Pump Intake Cup | 1 | Service part / kit | Amazon eBay |
| 120-0575 | Line, Filter Adapter to Cylinder Head | 1 | Service part / kit | Amazon eBay |
| 120-0601 | 1 Begin Spec H 3A 120,0602 | 1 | Service part / kit | Amazon eBay |
| 120-0626 | Coil, Ignition Condenser | 1 | Service part / kit | Amazon eBay |
| 123-0865 | 1 Baffle, Breather Tube- Spec A through S BASE, OIL | 1 | Service part / kit | Amazon eBay $23.69 |
| 123-1283 | Filter, Breather Tube | 1 | Service part / kit | Amazon eBay |
| 150-0075 | Pin, Camshaft Center | 1 | Service part / kit | Amazon eBay |
| 150-0863 | Stud, Governor Adjusting - Spec A | 1 | Service part / kit | Amazon eBay |
| 150-0902 | Bracket, Governor Adjustment | 1 | Service part / kit | Amazon eBay |
| 150-0974 | Joint, Ball | 2 | Service part / kit | Amazon eBay |
| 150-1069 | Housing, Vacuum Booster (Not Sold Separately) | 1 | Service part / kit | Amazon eBay |
| 150-1082 | Stud, Adjusting - Begin Spec R | 1 | Service part / kit | Amazon eBay |
| 502-0153 | Plug, Hex Head | 1 | Service part / kit | Amazon eBay NAPA $222.77 |
| 510-0046 | • 12 Spec A Only | 1 | Service part / kit | Amazon eBay |
| 517-0053 | Plug, Camshaft Opening | 1 | Service part / kit | Amazon eBay |
| 517-0059 | Plug (1/4"), Washer Drain | 2 | Service part / kit | Amazon eBay |
| 517-0096 | Nipple, Water Drain | 1 | Service part / kit | Amazon eBay |
| 517-0097 | Coupling (1/4"), Water Drain | 1 | Service part / kit | Amazon eBay |
| 526-0100 | Washer, Flat (9/16' ID x | 2 | Service part / kit | Amazon eBay |
| 526-0174 | Clamp, Muffler (1.50") | 1 | Service part / kit | Amazon eBay $9.95 |
| 800-0094 | Screw, Cap – Hex Head (1/2–13 x 2") | 1 | Service part / kit | Amazon eBay |
| 862-0015 | Nut, Hex | 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
Reference — 974-0220 Onan RJC (spec A-AC) Genset Parts & Special Parts manual (03-1990) (Cummins/Onan)Reference — T-009 Selecting Electric Generating Sets For Electric Motor Load (1-1972) (Cummins/Onan)Parts manual — 974-0220 Onan RJC (spec A-AC) Genset Parts manual (03-1990) (Cummins/Onan)
This page was generated from the 3 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.