Specifications
| Fuel | Diesel |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 1250 kW |
| Standby kVA | 1600 |
| Prime power | 1160 kW |
| Emissions | Tier 2 EPA-Certified for Stationary Emergency Applications |
| Controller | APM603, Decision-Maker 550, Decision-Maker 6000 |
| Oil capacity | 180.0 L |
| Alternator | 7M4046, 7M4048, 7M4050, 7M4052, 7M4172, 7M4174, 7M4288, 7M4366, 7M4368 |
| Voltage options | 220/380 V, 240/416 V, 277/480 V, 347/600 V, 2400/4160 V |
| Phase | 3 |
| Power factor | 0.8 |
| Battery cranking | 1150 CCA |
| Battery voltage | 12 V |
| Battery quantity | 4 |
| Coolant capacity | 341 L |
| Max ambient | 50 °C |
| Dimensions (L×W×H) | 6116×2232×2491 mm |
| Dry weight | 12020 kg |
Engine
| Oil capacity | 180.0 L |
|---|---|
| Coolant capacity | 509.1 L |
| Displacement | 49.0 L |
| Aspiration | Turbocharged, Inter Cooler |
| Rated speed | 1800 rpm |
Maintenance & consumables
for the Mitsubishi S12R-Y2PTAW-1| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Fuel filter | Secondary | GM13947 | Amazon eBay $79.99 PartsGeek | ||
| Oil filter | GM38852 | Amazon eBay PartsGeek |
Common questions
What is the power rating of the Kohler 1250REOZM?
The Kohler 1250REOZM is rated 1250 kW standby (1600.0 kVA).
What engine does the Kohler 1250REOZM use?
The Kohler 1250REOZM is powered by the Mitsubishi S12R-Y2PTAW-1 engine.
What fuel does the Kohler 1250REOZM use?
The Kohler 1250REOZM runs on Diesel.
What is the oil capacity of the Kohler 1250REOZM?
The Mitsubishi S12R-Y2PTAW-1 engine in the Kohler 1250REOZM has an oil capacity of 180.0 liters.
What alternator does the Kohler 1250REOZM use?
The Kohler 1250REOZM uses a 7M4046, 7M4048, 7M4050, 7M4052, 7M4172, 7M4174, 7M4288, 7M4366, 7M4368 alternator.
Parts
34model family| Part # | Description | Qty | System | |
|---|---|---|---|---|
| GM13942 | Oil Filter | 4 | Oil filter | Amazon eBay $25.00 PartsGeek |
| GM13943 | Oil Filter (bypass) | 1 | Oil filter | Amazon eBay PartsGeek |
| GM13944 | Thermostat | 4 | Thermostat | PartsGeek |
| GM13945 | Thermostat Gasket | 2 | Gasket | PartsGeek |
| GM13946 | Tip assembly, nozzle | 12 | Injector | PartsGeek |
| GM13947 | Fuel Filter | 4 | Fuel filter | Amazon eBay $79.99 PartsGeek |
| GM13948 | V-Belt (alternator) | 1 | Belt | Amazon eBay PartsGeek |
| GM13950 | Oil Filter (bypass) | 1 | Oil filter | Amazon eBay $23.66 PartsGeek |
| GM13951 | Fuel Filter | 2 | Fuel filter | Amazon eBay $59.00 PartsGeek |
| GM13952 | Fuel Filter | 4 | Fuel filter | Amazon eBay PartsGeek |
| GM13953 | Thermostat | 2 | Thermostat | PartsGeek |
| GM14525 | V-Belt (set of 4) | 1 | Belt | Amazon eBay $94.95 PartsGeek |
| GM14526 | V-Belt (set of 4) | 1 | Belt | Amazon eBay $39.80 PartsGeek |
| GM15752 | V-Belt | 1 | Belt | Amazon eBay PartsGeek |
| GM15753 | V-Belt (alternator) | 1 | Belt | Amazon eBay PartsGeek |
| GM15765 | Thermostat Gasket | 1 | Gasket | PartsGeek |
| GM21122 | V-Belt | 1 | Belt | Amazon eBay PartsGeek |
| GM21663 | Fuel Filter | 2 | Fuel filter | Amazon eBay PartsGeek |
| GM21727 | Thermostat Gasket | 2 | Gasket | PartsGeek |
| GM21733 | Tip assembly, nozzle | 16 | Injector | PartsGeek |
| GM21917 | V-Belt (alternator) | 1 | Belt | Amazon eBay PartsGeek |
| GM31390 | Thermostat | 4 | Thermostat | PartsGeek |
| GM31436 | Tip assembly, nozzle | 6 | Injector | PartsGeek |
| GM32057 | Oil Filter | 4 | Oil filter | Amazon eBay PartsGeek |
| GM35977 | Tip assembly, nozzle | 12 | Injector | PartsGeek |
| GM38852 | Oil Filter | 2 | Oil filter | Amazon eBay PartsGeek |
| GM64645 | Exhaust fan | 1 | Service part / kit | PartsGeek |
| GM64647 | Enclosure heater, 1-phase, 208 V | 1 | Service part / kit | PartsGeek |
| GM64648 | Enclosure heater, 1-phase, 240 V | 1 | Service part / kit | PartsGeek |
| GM64649 | Enclosure heater, 3-phase, 208 V | 1 | Service part / kit | PartsGeek |
| GM64650 | Enclosure heater, 3-phase, 240 V | 1 | Service part / kit | PartsGeek |
| GM65322 | Handle, door | 1 | Service part / kit | PartsGeek |
| GM65323 | Support, heavy-duty | 1 | Service part / kit | PartsGeek |
| GM65325 | Door, latched | 1 | Service part / kit | PartsGeek |
Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.
Fuel consumption
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| Prime | 25% | 105.0 | 27.6 |
| Prime | 50% | 176.0 | 46.4 |
| Prime | 75% | 259.0 | 68.4 |
| Prime | 100% | 344.0 | 90.9 |
| Standby | 25% | 110.0 | 29.2 |
| Standby | 50% | 193.0 | 51.0 |
| Standby | 75% | 284.0 | 75.1 |
| Standby | 100% | 392.0 | 103.4 |
Available documents
Brochure — 1250-2000REOZM REOZD G6119 (Kohler)Brochure — G6-39 0918AZ (Kohler)Brochure — GSA Product List (Kohler)Spec sheet — Kohler-1250REOZMD (Kohler)Spec sheet — g5366 (Kohler)Reference — FinalGSAPriceListEffective 3-20-2023 (Kohler)Reference — GSAPriceList (Kohler)Parts manual — pb137 (Kohler)Parts manual — pb98 (Kohler)Parts manual — tp6057 (Kohler)Wiring diagram — tp6289 (Kohler)Wiring diagram — tp6813 (Kohler)