The Cummins/Onan NT855-G6 is an engine. It powers generator sets from Cummins/Onan, including the DFBF. It holds 40 L (10.6 gal) of oil and 64.4 L (17.0 gal) of coolant.
Part of the Cummins/Onan NT855 engine family — 4 variants share parts & fitment.
| Oil capacity | 40.0 L |
|---|---|
| Coolant capacity | 64.4 L |
| Part # | Description | Category |
|---|---|---|
| 155-1035 | Cleaner, Air | air_filter |
| 503-0197 | Cap, Air Cleaner | air_filter |
| 503-0748 | Clamp, Hose - Air Cleaner | air_filter |
| CS-1198 | COOLANT FILTER | air_filter |
| CS-1382c | INLET AIR DAMPER | air_filter |
| ES-1214-2 | FLOAT SWITCH | air_filter |
| EXS-1036 | DRIP CAP | air_filter |
| 191-0688 | Alternator (24 Volt) | alternator |
| 191-0781 | Pulley, Alternator | alternator |
| 191-0725 | Guard, Alternator Belt | belt |
| 511-0084 | Belt, Alternator Drive | belt |
| 319-2236 | Bracket, Mounting | bracket |
| 505-0019 | Bushing, Pipe - Reducer 1/2” to 3/8”, DFBF (1/2” to 3/8”) 505-0131 DFCB, DFCC, DFCE (3/4” to 3/8”) | bushing |
| 518-0548-58 | Clamp, Hose | clamp |
| FS1803s | FUEL FILTERS | fuel_filter |
| 501-0087 | Hose, Vent | hose |
| 503-0354 | Clamp, Radiator Hose | hose |
| 503-0641 | Hose, Flexible Air Cleaner | hose |
| 503-0752 | Hose, Radiator | hose |
| 503-0756 | Hose, Radiator (Lower) | hose |
| PCC-3100 | LABEL | label |
| 505-0100 | Nipple, Pipe - Close (1/2”) | nipple |
| 870-0212 | Nut, Locking (1/4-20) | nut |
| 130-0843 | Bracket, Radiator Support | other_service |
| 130-0846 | Shroud, Radiator Fan | other_service |
| 130-0924 | Guard, Radiator Fan | other_service |
| 130-0992 | Radiator | other_service |
| 140-1347 | Cable, Battery Negative | other_service |
| 140-1349 | Cable, Battery Positive | other_service |
| 191-1141 | Bracket, Alternator Mounting | other_service |
| 504-0028 | Cock, Radiator Drain | other_service |
| 960-0138 | other_service | |
| 960-0606 | other_service | |
| CS-1366 | WIND BARRIER | other_service |
| EXS-1046s | CONDENSATION TRAP | other_service |
| FS1692s | FUEL SOLENOID VALVE LOCATION | other_service |
| M-1808 | DC CONTROL WIRING | other_service |
| TB11-29 | Engine Monitor Board | other_service |
| TB11-30 | Engine Monitor Board | other_service |
| TB11-31 | Engine Monitor Board | other_service |
| 102-1335 | Plug, Oil Drain | plug |
| 307-2621-02 | Relay, Start Solenoid (K4) | relay |
| 800-0048 | Screw, Cap - Hex Head (3/8-16 x 3/4”) | screw |
| 800-0092 | Screw, Cap - Hex Head (1/2-13 x 1.5) | screw |
| 193-0108 | Sender, Oil Pressure Gauge | sensor |
| 193-0244 | Sender, Water Temperature | sensor |
| 193-0432 | Sender, Oil Temperature (S2 Engine Block, E4 Oil Pan) | sensor |
| 309-0169 | 1 Begin Spec G 25 26 | sensor |
| 309-0178 | Sender, Water Temperature | sensor |
| 960-0504 | PCC Control Service Manual | service_manual |
| 960-0507 | Detector Control Service Manual | service_manual |
| 191-0852 | Starter (24 Volt) | starter |
| 309-0269 | Switch, Temperature - Low Engine Temperature (S4) | switch |
| CS-1367 | THERMOSTAT | thermostat |
| B-342-3s | PRIMING TURBOCHARGER OIL SUPPLY INLET LINE. DISCONNECT AT THIS POINT TO PRIME | turbocharger |
| 504-0011 | Valve, Shutoff (1/2”) | valve |
| 508-0292 | Washer, Sealing - Copper | washer |
| 526-0029 | Washer, Flat (3/8) | washer |
| 526-0219 | Washer, Flat (1/2) | washer |
| 850-0050 | Washer, Lock - Spring (3/8”) | washer |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
The Cummins/Onan NT855-G6 engine has an oil capacity of 40.0 liters.
The Cummins/Onan NT855-G6 powers 1 generator set(s), including Cummins/Onan DFBF.