HomeCummins/OnanCummins/Onan C20

Cummins/Onan C20 Generator Set

The Cummins/Onan C20 is a 18 kW (75 kVA) Diesel standby generator set powered by a Cummins/Onan 4B3.3-G1 engine. It is available at 120/240 V, Single Phase-phase and 60 Hz. It holds about 2.3 L (0.6 gal) of oil and 7.91 L (2.1 gal) of coolant. Starting uses 1 group-51 battery rated 450 CCA at 12 V. The set measures 865×915×694 mm (34.1×36.0×27.3 in), weighs about 241 kg (531 lb) and produces 97 dBA. An integrated tank holds 6.24 L (1.6 gal).

18 kW
Standby
2.3 L
Oil capacity
3
Document types

How to read your Cummins/Onan serial & model number →

Specifications

FuelDiesel
Frequency60.0 Hz
Standby power18 kW
Prime power18 kW
ControllerAlternator, Integrated Microprocessor Based Engine, PCC1301, Transfer Switch
Oil capacity2.3 L
Voltage options120/240 V
PhaseSingle Phase
Battery group51
Battery cranking450 CCA
Battery voltage12 V
Battery quantity1
Coolant capacity7.91 L
Dimensions (L×W×H)865×915×694 mm
Dry weight241 kg
Sound level97.0 dBA
Fuel tank6.24 L

Engine

Cummins/Onan 4B3.3-G1
Oil capacity8.0 L
Coolant capacity7.91 L

Common questions

What is the power rating of the Cummins/Onan C20?

The Cummins/Onan C20 is rated 18 kW standby.

What engine does the Cummins/Onan C20 use?

The Cummins/Onan C20 is powered by the Cummins/Onan 4B3.3-G1 engine.

What fuel does the Cummins/Onan C20 use?

The Cummins/Onan C20 runs on Diesel.

What is the oil capacity of the Cummins/Onan C20?

The Cummins/Onan 4B3.3-G1 engine in the Cummins/Onan C20 has an oil capacity of 8.0 liters.

Parts

10
Part #DescriptionQtySystem
98012-045C-GBCompressor oil thermostatic valveThermostat buy
98012-048C-GBHose reel with 20 m [66 ft] 3/4"-hoseHose buy
98012-046C-GBIntegrated aftercooler with automatic condensate drainService part / kit buy
98012-047C-GBAftercooler together with ultra-fine filtersService part / kit buy
98012-049C-GBBase mount for mounting on trucksService part / kit buy
98012-050C-GBSkid mount for stationary site installationService part / kit buy
98012-051C-GBVarious chassis versions availableService part / kit buy
98012-052C-GBCatch pan for fluidsService part / kit buy
98012-053C-GBVariety of towing eyes NATO, 40 mm DIN, 50 mm ball head etc. for passenger cars and trucksService part / kit buy
98012-054C-GBGenerator with automatic idle run: 7 kVA 110 V, 8 kVA 230 V/400 V or 12 kVA 230 V/400 V enable the additional operation of electrical itemsService 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

Operator's manualParts manualService manual

Other sets with this engine