Service parts for the DFBJ
Grouped by system, with how many of each the parts manual calls for.
Air intake
1 requiredFuel system
1 requiredOil system
1 requiredBelts
1 requiredElectrical
1 requiredIgnition
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Frequency | 50.0 Hz |
|---|---|
| Standby power | 250 kW |
| Controller | Detector |
| Oil capacity | 40.0 L |
| Phase | 3 |
| Battery voltage | 24 V |
Engine
| Oil capacity | 40.0 L |
|---|---|
| Coolant capacity | 62.5 L |
| Displacement | 14.0 L |
| Aspiration | Turbocharged |
| Rated speed | 1800 rpm |
Maintenance & consumables
for the Cummins/Onan NT855-G6| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | 123459 | 200 hr | Amazon eBay | ||
| Fuel filter | 123458 | 200 hr | Amazon eBay | ||
| Oil filter | 123457 | 200 hr | Amazon eBay $17.99 | ||
| Battery | 123462 | 200 hr | Amazon eBay | ||
| Belt | 123461 | 200 hr | Amazon eBay $18.95 | ||
| Coolant | 16.5 Liters | 123460 | 200 hr | Amazon eBay | |
| Coolant filter | B342-1 | 2 hr | Amazon eBay | ||
| Oil | 11.2 Liters | — | 200 hr | ||
| Spark plug | 123463 | 200 hr | Amazon eBay |
Common questions
How many kW is the Cummins/Onan DFBJ?
The Cummins/Onan DFBJ is rated 250 kW standby.
Which engine powers the Cummins/Onan DFBJ?
The Cummins/Onan DFBJ is powered by the Cummins/Onan NT855-G6 engine.
How much oil does the Cummins/Onan DFBJ take?
The Cummins/Onan NT855-G6 engine in the Cummins/Onan DFBJ has an oil capacity of 40.0 liters.
What oil filter does the Cummins/Onan DFBJ use?
The Cummins/Onan DFBJ uses oil filter part number 123457.
What fuel filter fits the Cummins/Onan DFBJ?
The Cummins/Onan DFBJ uses fuel filter part number 123458.
Which air filter part number does the Cummins/Onan DFBJ take?
The Cummins/Onan DFBJ uses air filter part number 123459.
Parts
33| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 140-2389 | Cleaner, Air (Includes Element) | 1 | Air filter | Amazon eBay |
| 140-2391 | Element - Air Cleaner (Standard) | 1 | Air filter | Amazon eBay |
| 191-1858 | Starter (24VDC) | 1 | Starter | Amazon eBay |
| 191-1982 | Pulley, Alternator | 1 | Alternator | Amazon eBay FridayParts $40.00 |
| 191-1983-02 | Alternator, 24 Volt Spec B-O (Prestolite) | 1 | Alternator | Amazon eBay |
| 193-0447-01 | Sender, Water Temperature (E2) | 1 | Sensor | Amazon eBay |
| 193-0448 | Sender, Oil Pressure | 1 | Sensor | Amazon eBay |
| 309-0269 | Switch, Low Engine Temperature (S4) | 1 | Sensor | Amazon eBay |
| 309-0576 | Switch, Thermostat - High Engine Coolant Temperature (S2) | 1 | Sensor | Amazon eBay |
| 309-0641-03 | Switch, Low Oil Pressure (S110) | 1 | Oil filter | Amazon eBay |
| 309-0641-07 | Switch, Oil Pressure (Closes at 20 lbs. Descending) | 1 | Sensor | Amazon eBay |
| 502-0827 | Hose, Barb (1/2–14) | 1 | Hose | Amazon eBay |
| 503-0189 | Clamp, Hose | 1 | Hose | Amazon eBay |
| 503-1634-01 | Hose, Rubber (3/4” ID x 4”) | 4 | Hose | Amazon eBay |
| 511-0092 | Belt, Alternator | 1 | Belt | Amazon eBay $13.97 |
| B-342-3s | PRIMING TURBOCHARGER OIL SUPPLY INLET LINE. DISCONNECT AT THIS POINT TO PRIME | Turbocharger | Amazon eBay | |
| CS-1382c | INLET AIR DAMPER | Air filter | Amazon Amazon eBay eBay | |
| ES-1214-2 | FLOAT SWITCH | Air filter | Amazon eBay | |
| FS1803s | FUEL FILTERS | Fuel filter | Amazon eBay | |
| 130-3588 | Cap, Radiator | 1 | Service part / kit | Amazon eBay $79.00 |
| 130-4355 | Radiator (2 Row Core) DFBJ | 1 | Service part / kit | Amazon eBay |
| 130-4355-01 | Radiator (3 Row Core) DFCF, DFCG | 1 | Service part / kit | Amazon eBay |
| 130-4369 | Radiator DFCH | 1 | Service part / kit | Amazon eBay |
| 155-2409-01 | Elbow, Exhaust (5" OD With Threads) | 1 | Service part / kit | Amazon eBay |
| 191-1981 | Genset component (SJB series) | 1 | Service part / kit | Amazon eBay |
| 191-2121 | Regulator, Voltage | 1 | Service part / kit | Amazon eBay |
| 333-0639-01 | Heater, Coolant (4990 Watt) | 1 | Service part / kit | Amazon eBay |
| 333-0639-02 | Heater, Coolant (6420 Watt) | 1 | Service part / kit | Amazon eBay |
| 503-1575 | Clamp, V-Band | 1 | Service part / kit | Amazon eBay |
| 504-0011 | Valve, Shutoff (1/2”) | 1 | Service part / kit | Amazon eBay |
| EXS-1046s | CONDENSATION TRAP | Service part / kit | Amazon Amazon eBay eBay | |
| FS1692s | FUEL SOLENOID VALVE LOCATION | Service part / kit | Amazon eBay | |
| M-1808 | DC CONTROL WIRING | Service part / kit | Amazon Amazon eBay 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
Parts manual — 960-0216 Cummins DFBJ DFCF DFCG DGCH Parts Manual (10-2010) (Cummins/Onan)