Service parts for the 40EKOZD
Grouped by system, with how many of each the parts manual calls for.
Air intake
1 requiredFuel 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 | 60.0 Hz |
| Standby power | 40 kW |
| Standby kVA | 50 |
| Prime power | 40 kW |
| Emissions | Tier III |
| Controller | Decision-Maker 3500 |
| Oil capacity | 10.5 L |
| Alternator | 4Q7BX (4-pole, Class Class H insulation) |
| Voltage options | 120/240 V |
| Phase | 1 |
| Rated current | 167 A |
| Battery cranking | 1000 CCA |
| Battery voltage | 12 V |
| Coolant capacity | 7 L |
| Max ambient | 25 °C |
| Dimensions (L×W×H) | 1633×767×1015 mm |
| Dry weight | 551 kg |
| Wet weight | 1025 kg |
Maintenance & consumables
for the Caterpillar C3.6| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Air Intake Filter | GM101994 | Amazon eBay $10.32 | ||
| Fuel filter | — | ||||
| Fuel filter | Fuel Filter Element (Primary) | GM41014 | Amazon eBay $70.50 | ||
| Oil filter | Oil Filter Element | ED0021753090-S | Amazon $39.99 eBay FridayParts $19.50 | ||
| Battery | heavy duty, maintenance free, 1000 CCA | — | |||
| Belt | belt | 229125 | Amazon $53.99 eBay $22.07 FridayParts $62.70 | ||
| Spark plug | — |
Voltage reconnection
| Voltage | Phase | Connection | Leads | Notes |
|---|---|---|---|---|
| 3/8 NPT Female | Fuel Supply Connection | |||
| M12x1.75 | Negative (-) Battery Connection | Thread pitch 1.75 mm | ||
| M8x1.25 | Positive (+) Battery Connection | Thread pitch 1.25 mm |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Common questions
How many kW is the Kohler 40EKOZD?
The Kohler 40EKOZD is rated 40 kW standby (50.0 kVA).
What engine is in the Kohler 40EKOZD?
The Kohler 40EKOZD is powered by the Caterpillar C3.6 engine.
What kind of fuel does the Kohler 40EKOZD run on?
The Kohler 40EKOZD runs on diesel.
What alternator does the Kohler 40EKOZD use?
The Kohler 40EKOZD uses a 4Q7BX alternator. It has 4 poles. Insulation class Class H.
What oil filter fits the Kohler 40EKOZD?
The Kohler 40EKOZD uses oil filter part number ED0021753090-S.
What fuel filter does the Kohler 40EKOZD use?
The Kohler 40EKOZD uses fuel filter part number GM41014.
What air filter fits the Kohler 40EKOZD?
The Kohler 40EKOZD uses air filter part number GM101994.
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% | 4.0 | 1.06 | |
| 50% | 7.1 | 1.87 | |
| 75% | 10.3 | 2.72 | |
| 100% | 13.9 | 3.68 | |
| Prime | 25% | 4.0 | 1.06 |
| Prime | 50% | 7.1 | 1.87 |
| Prime | 75% | 10.3 | 2.72 |
| Prime | 100% | 13.9 | 3.68 |