Service parts for the 12EFKOZD
Grouped by system, with how many of each the parts manual calls for.
Fuel system
1 requiredOil system
1 requiredBelts
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Fuel | diesel |
|---|---|
| Frequency | 50.0 Hz |
| Standby power | 12 kW |
| Standby kVA | 12 |
| Prime power | 12 kW |
| Controller | Decision-Maker 3500 |
| Oil capacity | 8.7 L |
| Alternator | 4E3.1 (Class H insulation) |
| Voltage options | 110/190 V, 115/230 V, 120/208 V, 230/400 V, 240/416 V, 220/380 V |
| Phase | 1 |
| Rated current | 53 A |
| Battery cranking | 650 CCA |
| Battery voltage | 12 V |
| Coolant capacity | 5.2 L |
| Dimensions (L×W×H) | 984×580×695 mm |
| Dry weight | 355 kg |
Maintenance & consumables
for the Caterpillar C3.6| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | with precleaner, automatic dust ejection and underhood intake | — | |||
| Fuel filter | Fuel Filter Element | ED0021753200-S | Amazon $68.80 eBay $17.99 FridayParts $68.86 | ||
| Oil filter | Oil Filter | ED0021752800-S | Amazon $21.95 eBay $22.90 FridayParts $19.99 | ||
| Battery | heavy duty, maintenance free, 1000 CCA | — | |||
| Belt | V-Belt (Seawater Pump) | GM90645 | Amazon eBay $30.30 | ||
| Spark plug | — |
Common questions
How many kW is the Kohler 12EFKOZD?
The Kohler 12EFKOZD is rated 12 kW standby (12.0 kVA).
Which engine powers the Kohler 12EFKOZD?
The Kohler 12EFKOZD is powered by the Caterpillar C3.6 engine.
What kind of fuel does the Kohler 12EFKOZD run on?
The Kohler 12EFKOZD runs on diesel.
What alternator comes on the Kohler 12EFKOZD?
The Kohler 12EFKOZD uses a 4E3.1 alternator. Insulation class H.
Which oil filter part number does the Kohler 12EFKOZD take?
The Kohler 12EFKOZD uses oil filter part number ED0021752800-S.
Which fuel filter part number does the Kohler 12EFKOZD take?
The Kohler 12EFKOZD uses fuel filter part number ED0021753200-S.
Troubleshooting
1Symptoms & remedies
| Symptom | Remedy |
|---|---|
| Accidental starting | Disconnect the battery cables before working on the generator set. Remove the negative (--) lead first when disconnecting the battery. Reconnect the negative (--) lead last when reconnecting the battery. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Parts
25Service, 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 |
|---|---|---|---|
| 25% | 1.35 | 0.36 | |
| 50% | 2.16 | 0.57 | |
| 75% | 3.08 | 0.81 | |
| 100% | 3.97 | 1.05 | |
| Prime | 25% | 1.35 | 0.36 |
| Prime | 50% | 2.16 | 0.57 |
| Prime | 75% | 3.08 | 0.81 |
| Prime | 100% | 3.97 | 1.05 |
| Standby | 25% | 1.35 | 0.36 |
| Standby | 50% | 2.16 | 0.57 |
| Standby | 75% | 3.08 | 0.81 |
| Standby | 100% | 3.97 | 1.05 |