HomeCummins/OnanCummins/Onan HDKAT

Cummins/Onan HDKAT Generator Set

The Cummins/Onan HDKAT is a 12.38 kW (7500 kVA) Diesel prime generator set. It is available at 120 V, 1-phase, 60 Hz and rated 62.5 A. It holds about 2.6 L (0.7 gal) of oil and 4 L (1.1 gal) of coolant. Starting uses battery rated 450 CCA at 12 V. The set measures 922×599×566 mm (36.3×23.6×22.3 in) and weighs about 191 kg (421 lb).

2.6 L
Oil capacity
5
Document types

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

Specifications

FuelDiesel
Frequency60.0 Hz
Prime power12 kW
ControllerGenerator, Integrated Microprocessor Based Engine
Oil capacity2.6 L
Voltage options120 V
Phase1
Rated current62.5 A
Circuit breaker35 A
Battery cranking[450, 650] CCA
Battery voltage12 V
Coolant capacity4 L
Dimensions (L×W×H)922×599×566 mm
Dry weight191 kg

Filters & service parts

model family
ItemSpecCapacityPart #Interval
Air filterclean and tighten the positive (+) and negative (−) battery cable connections at the battery, vehicle frame and genset find
Fuel filter find
Oil filtersee oil filling instructions find
Belt find
Coolant4.0 l
Coolant filter find
Oil

Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number.

Common questions

What fuel does the Cummins/Onan HDKAT use?

The Cummins/Onan HDKAT runs on Diesel.

Troubleshooting

1

Fault codes

CodeMeaning
Fault Code BlinkingRestoring Fault Code Blinking

Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.

Parts

6
Part #DescriptionQtySystem
541-0531Remote Air Cleaner Kit1Air filter buy
965-0100Engine Control ModuleECM / ECU buy
981-0200Service part / kit buy
981-0522Service part / kit buy
981-0610Service part / kit buy
A043T624Recommended Spares List (RSL) for RV Generator Set (HDKAT)Service 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.

Fuel consumption

RatingLoadL/hgal/h
Full-load106%0.963.63
Half-load (4000 w)53%0.490.185
No-load0.490.185

Available documents

Engine specOperator's manualReferenceParts manualService manual