Specifications
| Fuel | Gasoline |
|---|---|
| Frequency | 50.0 Hz |
| Standby power | 16 kW |
| Standby kVA | 20 |
| Prime power | 15 kW |
| Controller | Decision-Maker 3+ |
| Oil capacity | 4.7 L |
| Alternator | Kohler 4P4 |
| Voltage options | 110/220 V, 110/190 V, 220/380 V, 230/400 V, 240/416 V, 120/208 V |
| Phase | 3 |
| Power factor | 0.8 |
| Battery cranking | 630 CCA |
| Battery voltage | 12 V |
| Battery quantity | 1 |
| Coolant capacity | 15.1 L |
| Max ambient | 50 °C |
| Dimensions (L×W×H) | 1905×737×1085 mm |
Engine
| Oil capacity | 4.7 L |
|---|---|
| Coolant capacity | 15.1 L |
| Displacement | 2.5 L |
| Aspiration | Natural |
| Rated speed | 1500 rpm |
Maintenance & consumables
for the Ford LRG 425| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | 9131141 | PartsGeek kuduparts $37.00 | |||
| Fuel filter | — | find | |||
| Oil filter | — | find | |||
| Belt | — | find | |||
| Coolant | — | ||||
| Oil | — |
Compatible filters for the Ford LRG 425 — cross-referenced via Donaldson. Options to verify against your serial number, not confirmed for this exact unit.
- Oil filter: Ford 9576P550008 Ford VSG413 Donaldson P550008 Donaldson P550400 Ac Delco X29
Common questions
What is the power rating of the Kohler 20RZ?
The Kohler 20RZ is rated 16 kW standby (20.0 kVA).
What engine does the Kohler 20RZ use?
The Kohler 20RZ is powered by the Ford LRG 425 engine.
What fuel does the Kohler 20RZ use?
The Kohler 20RZ runs on Gasoline.
What is the oil capacity of the Kohler 20RZ?
The Ford LRG 425 engine in the Kohler 20RZ has an oil capacity of 4.7 liters.
What alternator does the Kohler 20RZ use?
The Kohler 20RZ uses a Kohler 4P4 alternator.
Parts
28| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 104161 | Failure Relay | Controller | PartsGeek | |
| 185112 | Engine and Decals | Physical | PartsGeek | |
| 193901 | Load Bank and Wiring | Electrical | PartsGeek | |
| 194101 | Prealarm Senders | Controller | PartsGeek | |
| 196201 | Controller, Decision-Maker 340 | Controller | PartsGeek | |
| 253743 | Switch, temperature (Hwt) | 1 | Sensor | PartsGeek |
| 254495 | Silencer Mounting, Critical | Physical | PartsGeek kuduparts $205.99 | |
| 255131 | Safeguard Breaker | Controller | PartsGeek | |
| 255242 | Switch, temperature (Hwt) | 1 | Sensor | PartsGeek |
| 255264 | Switch, temperature (Lwt) | 1 | Sensor | PartsGeek |
| 255347 | Silencer, Critical | Acoustic | PartsGeek kuduparts $298.99 | |
| 271425 | Switch, pressure (Std) | 1 | Sensor | PartsGeek |
| 271662 | Alternator Assembly | 1 | Sensor | PartsGeek |
| 273743 | Run Relay, 12 V | Controller | PartsGeek | |
| 276255 | Tail Pipe and Rain Cap | Physical | PartsGeek | |
| 290090 | Switch, temperature (Lwt) | 1 | Sensor | PartsGeek |
| 326038 | Block Heater | Block heater | PartsGeek | |
| 326039 | Block Heater | Block heater | PartsGeek | |
| 326222 | Mounting Bracket | Mounting bracket | PartsGeek | |
| 326224 | Mounting Bracket | Mounting bracket | PartsGeek | |
| 326237 | Air Cleaner Restriction Indicator | Air filter | PartsGeek | |
| 326447 | Block Heater | Physical | PartsGeek | |
| 326874 | Cooling, Unit Mounted Radiator | Cooling | PartsGeek | |
| 326875 | Fuel System, Nat. Gas or LP Gas | Fuel tank | PartsGeek | |
| 326877 | RS-485 Communication Module | Electrical | PartsGeek | |
| 326878 | Air Intake, Standard Duty | Air filter | PartsGeek | |
| 326879 | Skid | Physical | PartsGeek | |
| 326880 | Alternator | Alternator | PartsGeek |
Service, wear & replacement parts referenced for this model and its engine — 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% | 5.7 | 1.5 |
| Prime | 50% | 8.3 | 2.2 |
| Prime | 75% | 10.2 | 2.7 |
| Prime | 100% | 11.4 | 3.0 |
| Standby | 25% | ||
| Standby | 50% | ||
| Standby | 75% | ||
| Standby | 100% |
Available documents
Spec sheet — 44923003 kohler model 20rz spec sheet (Kohler)