The Cummins/Onan GTA19-G2 is a 19 L 6-cylinder natural engine rated at 1800 rpm, producing up to 531 kW. It powers generator sets from Cummins/Onan and Katolight, including the GFEB, GTA19G2, NL350FGZ4 and NL350FJZ4. It holds 54.9 L (14.5 gal) of oil and 30 L (7.9 gal) of coolant.
Also known as: Cummins GTA19-G2, GTA19-G2
Part of the Cummins/Onan GTA19 engine family — 3 variants share parts & fitment.
| Oil capacity | 54.9 L |
|---|---|
| Coolant capacity | 30.0 L |
| Displacement | 19.0 L |
| Cylinders | 6 |
| Aspiration | Natural |
| Rated speed | 1800 rpm |
| Gross power | 531 kW |
Shared across brands: Cummins/Onan, Katolight
How to read your Cummins/Onan engine serial & model number →
| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Pressure | SAE J1349 test condition: barometric pressure | 29.61 | in. Hg | 100 kPa; 300 ft (91 m) altitude |
| Pressure | SAE J1349 test condition: water pressure | 0.30 | in. Hg | 1 kPa |
| Temperature | Rating note (1): water temperature to aftercooler, or use of air-to-air aftercooler with 100 F or lower air temperature to the radiator | 32 | C (90 F) | applies to 10.5:1 / 10:1 / 11:1 note-(1) ratings |
| Temperature | Rating note (2): water temperature to aftercooler, or use of air-to-air aftercooler with 130 F or lower air temperature to the radiator | 54 | C (130 F) | applies to 8.5:1 note-(2) ratings |
| Temperature | Rating note (3): water temperature to aftercooler, or use of air-to-air aftercooler with 110 F or lower air temperature to the radiator | 32 | C (90 F) | applies to 10.5:1 note-(3) ratings |
| Temperature | Rating note (4): water temperature to aftercooler, or use of air-to-air aftercooler with 130 F or lower air temperature to the radiator | 54 | C (130 F) | applies to 8.5:1 note-(4) ratings |
| Temperature | SAE J1349 test condition: inlet air temperature | 77 | F | 25 C |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Fluid | Grade | Standard | Ambient | Capacity | Notes |
|---|---|---|---|---|---|
| Fuel | dry processed natural gas | 905 BTU per standard cubic foot (33.72 kJ/l) lower heating value, used for the tabulated ratings; deration may be required due to altitude, temperature, type of fuel or use of a catalytic converter |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Voltage | Phase | Connection | Leads | Notes |
|---|---|---|---|---|
| 120/208 | 3 | 12 LEAD LOW WYE | 12 | NL350FPZ4 |
| 120/240 | 1 | 12 LEAD ZIG-ZAG | 12 | NL350FGZ4 |
| 120/240 | 3 | 12 LEAD HI DELTA | 12 | NL350FJZ4 |
| 277/480 | 3 | 12 LEAD HI WYE | 12 | NL350FRZ4 |
| 347/600 | 3 | 4 LEAD WYE | 4 | NL350FNZ4 |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Part # | Description | Category |
|---|---|---|
| 600VF | Carb. | other_service |
| GTA19 | Literature (LT4045) | other_service |
| HP28000 | marine gears. | other_service |
| MG514 | marine gear and | other_service |
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 GTA19-G2 engine has an oil capacity of 54.9 liters.
The Cummins/Onan GTA19-G2 has a displacement of 19.0 liters with 6 cylinders.
The Cummins/Onan GTA19-G2 powers 7 generator set(s), including Cummins/Onan GFEB, Cummins/Onan GTA19G2, Katolight NL350FGZ4, Katolight NL350FJZ4, Katolight NL350FNZ4.