The Cummins/Onan GTA855 is a 14 L 6-cylinder turbocharged & aftercooled engine rated at 1500 rpm, producing up to 250 kW. It powers generator sets from Cummins/Onan.
Also known as: Cummins GTA855
| Displacement | 14.0 L |
|---|---|
| Cylinders | 6 |
| Aspiration | Turbocharged & Aftercooled |
| Rated speed | 1500 rpm |
| Gross power | 250 kW |
How to read your Cummins/Onan engine serial & model number →
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | ||||
| Fuel filter | — | ||||
| Oil filter | — | ||||
| Battery | — | ||||
| Belt | — | ||||
| Coolant | — | ||||
| Oil | 3.8 | — | |||
| Spark plug | — |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
| Item | Action | Hours | Months | Notes |
|---|---|---|---|---|
| filters | Change | 1000 hr | with CENTINEL, depending on load factors | |
| fuel filter | Change | 1500 hr | Fleetguard NanoNet media | |
| engine oil | Change | 4500 hr | with CENTINEL, railway applications |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Other | Compression ratio | 10.5:1 | ||
| Other | Compression ratio | 10:1 | ||
| Other | Compression ratio | 11:1 | ||
| Other | Compression ratio | 12:1 | ||
| Other | Compression ratio | 8.5:1 | ||
| Other | Power ratings (hp) | 1500 RPM: Standby W/Fan --, W/O Fan 43, Prime W/Fan --, W/O Fan 39, Fan HP --; 1800 RPM: Standby W/Fan --, W/O Fan 51, Prime W/Fan --, W/O Fan 46, Fan HP -- | hp |
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 | Test condition |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
The Cummins/Onan GTA855 has a displacement of 14.0 liters with 6 cylinders.
The Cummins/Onan GTA855 powers 1 generator set(s), including Cummins/Onan GTA855.