Service parts for the K25
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
| Fuel | Diesel/HVO |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 23.4 kW |
| Standby kVA | 30 |
| Prime power | 21.1 kW |
| Emissions | Stage IIIA |
| Controller | {'kind': 'APM303', 'spec': 'dual-function control panel', 'part_number': None, 'capacity_value': None, 'capacity_unit': None, 'interval_hours': None},{'kind': 'APM403', 'spec': 'versatile control unit', 'part_number': None, 'capacity_value': None, 'capacity_unit': None, 'interval_hours': None},{'kind': 'M80', 'spec': 'dual-function control panel', 'part_number': None, 'capacity_value': None, 'capacity_unit': None, 'interval_hours': None} |
| Oil capacity | 6.5 L |
| Alternator | AT00404TO4N |
| Voltage options | 480/277 V, 440/254 V, 220/127 V |
| Battery voltage | 12 V |
| Dimensions (L×W×H) | 1700×896×1221 mm |
| Dry weight | 709 kg |
| Sound level | 81.0 dBA @ [1, 7] m |
| Fuel tank | 100.0 L |
Engine
| Oil capacity | 6.5 L |
|---|---|
| Coolant capacity | 8.1 L |
| Displacement | 2.51 L |
| Aspiration | Athmo |
| Rated speed | 1500 rpm |
Filters for the Mitsubishi S4Q2-SD
2Engine-mounted filters the filter manufacturers list for this engine family. These come from the engine, not from this generator set’s own parts list, so confirm against your serial number before ordering.
| System | Filter | Description | Cross-references | |
|---|---|---|---|---|
| Oil filter | P502051 | Lube Filter, Spin-On Full Flow | MITSUBISHI MD162326M, NAPA 1334, NAPA 1344, NAPA 61334 | buy |
Listed for this engine in only one kind of machine, so they may depend on how the engine was installed:
| System | Filter | Description | Cross-references | |
|---|---|---|---|---|
| Fuel / water separator | P551423 | Fuel Filter, Water Separator Spin-On | MITSUBISHI D070001, NAPA 3531, NAPA 600091, NAPA 600092 | KuduParts $18.00 FridayParts $20.00 |
Same engine, other brands
1 brandThe Mitsubishi S4Q2-SD in this set also powers 3 generator sets sold under 1 other brand. Service parts and maintenance intervals for the engine are shared; enclosure, alternator, controller and ratings are not.
| Brand | Models |
|---|---|
| SDMO | R22, T 17 KM, T 22 K |
Maintenance & consumables
for the Mitsubishi S4Q2-SD| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | ||||
| Fuel filter | 330560552 | Amazon eBay $17.99 PartsGeek $11.97 NAPA $36.94 | |||
| Oil filter | 330560546 | Amazon eBay $28.08 | |||
| Battery | — | ||||
| Belt | — | ||||
| Coolant | 8.1 L | — | |||
| Oil | 6.5 L | — | |||
| Spark plug | — |
Compatible filters for the Mitsubishi S4Q2-SD — cross-referenced via Donaldson. Options to verify against your serial number, not confirmed for this exact unit.
- Air filter: Sdmo 330570079 Sdmo 330570156 Sdmo 330570162 Mitsubishi MD623028 Mitsubishi 1348726
Common questions
What size generator is the Kohler K25?
The Kohler K25 is rated 23.4 kW standby (30.25 kVA).
Which engine powers the Kohler K25?
The Kohler K25 is powered by the Mitsubishi S4Q2-SD engine.
What kind of fuel does the Kohler K25 run on?
The Kohler K25 runs on Diesel/HVO.
What is the oil capacity of the Kohler K25?
The Mitsubishi S4Q2-SD engine in the Kohler K25 has an oil capacity of 6.5 liters.
How much coolant does the Kohler K25 hold?
The Kohler K25 cooling system holds 8.1 liters (2.1 US gallons) for the engine, per the manufacturer specification sheet.
What is the prime power rating of the Kohler K25?
The Kohler K25 is rated 21.1 kW prime (27 kVA), against 23.4 kW standby.
How loud is the Kohler K25?
The Kohler K25 is rated at 81.0 dBA at [1, 7] m, per the manufacturer specification sheet.
What is the dry weight of the Kohler K25?
The Kohler K25 has a dry weight of 709 kg (1563 lb).
What size fuel tank does the Kohler K25 have?
The Kohler K25 has a 100 liter (26 US gallon) fuel tank.
What voltages is the Kohler K25 available in?
The Kohler K25 is offered in 480/277 V, 440/254 V, 220/127 V.
What alternator does the Kohler K25 use?
The Kohler K25 uses a AT00404TO4N alternator.
What oil filter fits the Kohler K25?
The Kohler K25 uses oil filter part number 330560546.
What fuel filter fits the Kohler K25?
The Kohler K25 uses fuel filter part number 330560552.
What air filter fits the Kohler K25?
The Kohler K25 uses air filter part numbers SDMO 330570079, SDMO 330570156.
Parts
1| Part # | Description | Qty | System | |
|---|---|---|---|---|
| ED0082051370-S | COV.HEAD GASK.-OR SET 2504 M | 1 | Gasket | Amazon eBay $49.90 |
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 2 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.