HomeEnginesCummins/Onan GTA14

Cummins/Onan GTA14 Engine Engine

The Cummins/Onan GTA14 is a 14 L aftercooled turbocharged engine. It powers generator sets from Cnge, including the GTA14 qi 20 NA.

Also known as: Cummins Natural Gas Engines, Inc. GTA14

Part of the Cummins/Onan GTA14 engine family — 3 variants share parts & fitment.

14.0 L
Displacement

Engine specifications

Displacement14.0 L
AspirationAftercooled Turbocharged

Generator sets powered by this engine

1
Cnge GTA14 qi 20 NA

Maintenance schedule

ItemSpecCapacityPart #Interval
Air filter750 hr find
Fuel filter750 hr find
Oil filter750 hr find
Belt750 hr find
Coolant6000 hr
Coolant filterFleetguard™ DCA4™ Water Filter Element.500 hr find
Oil36.0 litres750 hr

Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.

Parts cataloged across the Cummins/Onan GTA14 family

6
Part #DescriptionCategory
3822524Use on v-belts ( 3/8 to 7/8) and v-ribbed belts with 5 ribs or less.belt
3822525Use on v-beits larger than 7/8 in. and v-ribbed belts with 6 or more ribs.belt
LF750Bypass Filter, 750 in3bypass_filter
LF3000Lube, Spin-Onoil_filter
3376592Inch Pound Torque Wrenchother_service
7-19Spark PLUGspark_plug

Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.

Common questions

What is the displacement of the Cummins/Onan GTA14?

The Cummins/Onan GTA14 has a displacement of 14.0 liters.

Which generators use the Cummins/Onan GTA14 engine?

The Cummins/Onan GTA14 powers 1 generator set(s), including Cnge GTA14 qi 20 NA.

How often should you change the oil in the Cummins/Onan GTA14?

The Cummins/Onan GTA14 oil change interval is every 750 hours.