Service parts for the MLT4250
Grouped by system, with how many of each the parts manual calls for.
Fuel system
1 requiredOil system
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Frequency | 60.0 Hz |
|---|---|
| Standby power | 25 kW |
| Standby kVA | 34 |
| Prime power | 23 kW |
| Oil capacity | 8.6 L |
Engine
| Oil capacity | 8.1 L |
|---|---|
| Coolant capacity | 11.0 L |
| Displacement | 2.2 L |
| Aspiration | liquid cooled, 4-stroke |
| Rated speed | 1800 rpm |
Maintenance & consumables
for the Isuzu 4LE1NYGV-03 / 4LE1NYGV-03E| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | 250 hr | |||
| Fuel filter | 8944015310 | 250 hr | Amazon eBay $86.33 NAPA $16.78 | ||
| Oil filter | 670570304 | 250 hr | Amazon eBay $16.89 PartsGeek $7.98 NAPA $9.09 FridayParts $20.19 | ||
| Battery | — | 250 hr | |||
| Belt | — | 250 hr | |||
| Coolant | — | 250 hr | |||
| Oil | — | 250 hr | |||
| Spark plug | — | 250 hr |
Compatible filters for the Isuzu 4LE1NYGV-03 / 4LE1NYGV-03E — cross-referenced via Donaldson. Options to verify against your serial number, not confirmed for this exact unit.
- Air filter: Generac OE3557 Generac OE3656 Isuzu 5864014350 Isuzu 8972599390 Donaldson P775687
Common questions
What size generator is the Generac MLT4250?
The Generac MLT4250 is rated 25 kW standby (34.5 kVA).
What engine is in the Generac MLT4250?
The Generac MLT4250 is powered by the Isuzu 4LE1NYGV-03 / 4LE1NYGV-03E engine.
What's the oil capacity on a Generac MLT4250?
The Isuzu 4LE1NYGV-03 / 4LE1NYGV-03E engine in the Generac MLT4250 has an oil capacity of 8.1 liters.
How much coolant does the Generac MLT4250 hold?
The Generac MLT4250 cooling system holds 11 liters (2.9 US gallons) for the engine, per the manufacturer specification sheet.
What is the continuous rating of the Generac MLT4250?
The Generac MLT4250 is rated 23 kW prime (31 kVA), against 25 kW standby.
What oil filter does the Generac MLT4250 use?
The Generac MLT4250 uses oil filter part number 670570304.
What fuel filter fits the Generac MLT4250?
The Generac MLT4250 uses fuel filter part number 8944015310.
What air filter does the Generac MLT4250 use?
The Generac MLT4250 uses air filter part numbers GENERAC OE3557, GENERAC OE3656.
Parts
2| Part # | Description | Qty | System | |
|---|---|---|---|---|
| MIT4150 | 240 VAC 50 Amp Twistlock Outlets | 2 | Service part / kit | Amazon eBay |
| MIT4200 | 240 VAC 30 Amp Twistlock Outlets | 2 | Service part / kit | Amazon eBay |
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.
Available documents
This page was generated from the 1 manufacturer document above by automated extraction; every figure shown is copied from one of them. How the data is compiled.