The Cummins/Onan KTA38-G1 is an engine. It powers generator sets from Cummins/Onan, including the DFJA KTA31. It holds 81.5 L (21.5 gal) of oil and 85.3 L (22.5 gal) of coolant.
Also known as: Cummins KTA38-G1
Part of the Cummins/Onan KTA38 engine family — 14 variants share parts & fitment.
| Oil capacity | 81.5 L |
|---|---|
| Coolant capacity | 85.3 L |
Compiled from service & troubleshooting documentation across every generator set that uses the Cummins/Onan KTA38-G1.
| Part # | Description | Category |
|---|---|---|
| UC224C | Alternator Model | alternator |
| UC274F | Alternator Model | alternator |
| FF202 | Fuel, Spin-On | fuel_filter |
| FS1216 | Fuel/Water Sep Spin-On | fuel_filter |
| M-4352580 | Upper Gasket Set | gasket |
| 3822575 | Injector and valve adjustment kit | injector |
| 3096680 | Piston STC 13.8:1 Ratio | other_service |
| 3096681 | Piston KT Series 15.5:1 Ratio | other_service |
| 3096682 | Piston KTA Series 14.5:1 Ratio | other_service |
| 3096683 | Piston 13.5:1 Ratio | other_service |
| 3096684 | Piston KTA 15.7:1 Ratio | other_service |
| 3096685 | Piston STC 13.9:1 Ratio | other_service |
| 3628731 | Piston STC Kit | other_service |
| 3630913 | Piston KTA-50-G7 | other_service |
| 3631241 | Piston Kit STC 13.9:1 Ratio | other_service |
| 3631242 | Piston Kit 13.5:1 Ratio | other_service |
| 3631243 | Piston Kit KTA 15.7:1 Ratio | other_service |
| 3631244 | Piston Kit KTA Series 14.5:1 Ratio | other_service |
| 3631245 | Piston Kit KT Series 15.5:1 Ratio | other_service |
| 3631246 | Piston Kit STC 13.8:1 Ratio | other_service |
| 3803530 | Piston Assembly STC | other_service |
| 3804747 | Piston Kit KTA-50-G7 | other_service |
| 3804885 | Piston KTA-50-G8/G9 | other_service |
| 4089847 | Piston Kit GTA38/19 | other_service |
| 4090013 | Piston Kit KTA-38-M2 | other_service |
| 4090029 | Piston Kit QSK19CE | other_service |
| 4090181 | Piston GTA38/19 | other_service |
| 4097889 | Piston KTA-38-M2 | other_service |
| 4910463 | Piston QSK19R/M | other_service |
| 4910465 | Piston QSK Series | other_service |
| 4916177 | Piston GTA/GQSK19 | other_service |
| 4918058 | Piston QSK19CE | other_service |
| 4922319 | Piston QSK19C | other_service |
| 4955233 | Piston Kit QSK19R/M | other_service |
| 4955235 | Piston Kit QSK Series | other_service |
| 4955236 | Piston Kit QSK19C | other_service |
| 4955238 | Piston Kit GTA/GQSK19 | other_service |
| M-3804747 | Piston Kit | other_service |
| V2403-M-E3BG | Engine Model | 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 KTA38-G1 engine has an oil capacity of 81.5 liters.
The Cummins/Onan KTA38-G1 powers 1 generator set(s), including Cummins/Onan DFJA KTA31.
A commonly reported issue on generators using the Cummins/Onan KTA38-G1 is: Engine fails to start, or starts, runs and then stops. Fix: Refer to Troubleshooting Section in the Operator’s manual.