HomeCummins/OnanCummins/Onan NTA855G2 CP350-6 DFCB

Cummins/Onan NTA855G2 CP350-6 DFCB Generator Set

The Cummins/Onan NTA855G2 CP350-6 DFCB is a 312 kW (351 kVA) Diesel standby generator set powered by a Cummins/Onan NTA855-G2 engine. It is available at 220 V, single-phase and 60 Hz. It holds about 38.6 L (10.2 gal) of oil and 84.8 L (22.4 gal) of coolant, with a maximum ambient rating of 40 °C. Starting uses group-127 battery. The set weighs about 300 kg (661 lb). An integrated tank holds 800 L (211.3 gal).

312 kW
Standby
14.0 L
Displacement
38.6 L
Oil capacity
1
Document types

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Service parts for the NTA855G2 CP350-6 DFCB

Grouped by system, with how many of each the parts manual calls for.

Fuel system

1 required
M-1398-1Fuel filtersee priceAmazon

Prices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.

Specifications

FuelDiesel
Frequency60.0 Hz
Standby power312 kW
Prime power281 kW
ControllerPCL
Oil capacity38.6 L
AlternatorStamford/AvK CP350-6
Voltage options220 V, 480 V
PhaseSingle
Battery group127
Coolant capacity84.8 L
Max ambient40 °C
Dry weight300 kg
Fuel tank800.0 L

Engine

Cummins/Onan NTA855-G2
Oil capacity40.0 L
Coolant capacity64.4 L
Displacement14.0 L
AspirationTurbo Aftercooled
Rated speed1800 rpm

Maintenance & consumables

for the Cummins/Onan NTA855-G2
ItemSpecCapacityPart #Interval
Air filter
Fuel filterM-1398-1500 hr Amazon eBay
Oil filter250 hr
Battery127 A/hr500 hr
Belt100 hr
Coolant84.8 Litres
Coolant filter250 hr
Oil38.6 Litres38.6 Litres500 hr
Spark plug250 hr

Common questions

How many kW is the Cummins/Onan NTA855G2 CP350-6 DFCB?

The Cummins/Onan NTA855G2 CP350-6 DFCB is rated 312 kW standby.

Which engine powers the Cummins/Onan NTA855G2 CP350-6 DFCB?

The Cummins/Onan NTA855G2 CP350-6 DFCB is powered by the Cummins/Onan NTA855-G2 engine.

Is the Cummins/Onan NTA855G2 CP350-6 DFCB diesel or gas?

The Cummins/Onan NTA855G2 CP350-6 DFCB runs on Diesel.

What's the oil capacity on a Cummins/Onan NTA855G2 CP350-6 DFCB?

The Cummins/Onan NTA855-G2 engine in the Cummins/Onan NTA855G2 CP350-6 DFCB has an oil capacity of 40.0 liters.

What alternator comes on the Cummins/Onan NTA855G2 CP350-6 DFCB?

The Cummins/Onan NTA855G2 CP350-6 DFCB uses a Stamford/AvK CP350-6 alternator.

What fuel filter does the Cummins/Onan NTA855G2 CP350-6 DFCB use?

The Cummins/Onan NTA855G2 CP350-6 DFCB uses fuel filter part number M-1398-1.

Parts

11
Part #DescriptionQtySystem
B-342-10CRANKCASE BREATHERBreather Amazon eBay
CS-1075-1COOLANT FILTERSCoolant filter Amazon eBay
CS-1130-1EXPANSION TANK CAPExpansion tank cap Amazon eBay
ES-1779-1VOLTAGE REGULATOR AND EXCITATION SWITCHExcitation switch Amazon eBay
M-1298CHECK OIL LEVEL (ON RIGHT SIDE OF ENGINE)Oil filter Amazon eBay
M-1398STANDARD AIR CLEANER1Air filter Amazon eBay
M-1398-1DUCTAir inlet Amazon eBay
M-1398-2HEAVY DUTY AIR CLEANER (OPTIONAL)1Air filter Amazon eBay
M-1739CYLINDER BLOCK RADIATOR DRAINCOCK AND OIL COOLER AND LOWER RADIATOR HOSE M-17391Hose Amazon eBay
M-1740SUPPLY LINE, FILTER TO INJECTION PUMP FS-14241Fuel pump Amazon eBay
S-1610VOLTAGE SELECTOR LIGHTSService 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.

Fuel consumption

RatingLoadL/hgal/h
Prime100%87.022.98
Standby100%96.025.36

Available documents

Spec sheet — NT855 60HZ 281~350kw (Cummins/Onan)