Service parts for the QSK23
Grouped by system, with how many of each the parts manual calls for.
Air intake
1 requiredFuel system
1 requiredOil system
1 requiredElectrical
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Fuel | 4 cycle, turbocharged |
|---|---|
| Frequency | 50.0 Hz |
| Standby power | 665 kW |
| Standby kVA | 724 |
| Prime power | 582 kW |
| Emissions | EPA Tier 2 |
| Controller | CM2250 ECM, G-Drive Governor (GCS) |
| Oil capacity | 103.0 L |
| Alternator | 35A |
| Voltage options | 50 V, 60 V |
| Coolant capacity | 110 L |
| Max ambient | 50.9 °C |
| Dimensions (L×W×H) | 2976×1656×1964 mm |
| Dry weight | 3245 kg |
Engine
| Oil capacity | 12.0 L |
|---|---|
| Coolant capacity | 12.0 L |
| Displacement | 23.0 L |
| Aspiration | Turbocharged |
| Rated speed | 1500 rpm |
Filters for the Cummins/Onan QSK23
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 | |
|---|---|---|---|---|
| Fuel / water separator | P552006 | Fuel Filter, Water Separator Spin-On Twist&Drain | CUMMINS 3089916, CUMMINS 4095189, NAPA 3645, BALDWIN BF1262 | FridayParts $42.88 |
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 | |
|---|---|---|---|---|
| Oil filter | P551670 | Lube Filter, Spin-On Full Flow | CUMMINS 298670, CUMMINS 299670, NAPA 1970, CARBOCOL 0026 | FridayParts $26.68 |
Maintenance & consumables
for the Cummins/Onan QSK23| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | AF25544 | AF25544 | Amazon eBay $285.93 NAPA $391.96 | ||
| Fuel filter | (1) primary element AF25544; (1) secondary element AF25545, (2) Cummins Filtration FS1006 | — | 500 hr | ||
| Fuel filter | FS1006 | FS1006 | Amazon eBay $29.99 NAPA $90.16 | ||
| Oil filter | Cummins QuickServe® Commitment | LF9325 | 250 hr | Amazon eBay $127.04 KuduParts $74.00 FridayParts $75.99 | |
| Battery | 526−0112 | A048G602 | 500 hr | eBay | |
| Belt | Steel, flanged; Stainless steel flex, NPT | — | 15000 hr | ||
| Coolant | Antifreeze 50/50 (Ethylene glycol) | — | 24000 hr | ||
| Coolant filter | Cummins Filtration WF2076 | — | 500 hr | ||
| Oil | Cummins QuickServe® Commitment | — | 250 hr | ||
| Spark plug | — | 500 hr |
Service intervals
5| Item | Action | Hours | Months | Notes |
|---|---|---|---|---|
| Lubricating oil | Test | 250 hr | 6 mo | First service — For high horsepower engines with Eliminator™ oil filter option: take oil samples every 250 hours and analyze per Cummins Engine Oil Recommendations Bulletin 3810340; repeat for at least three oil change intervals. |
| filters | Change | 1000 hr | with CENTINEL, depending on load factors | |
| ELIMINATOR self cleaning filter core | Other | 1500 hr | Requires servicing only every 1,500 hours. Saves up to 90% of lube system maintenance costs and increases productivity. | |
| fuel filter | Change | 1500 hr | Fleetguard NanoNet media | |
| engine oil | Change | 4500 hr | with CENTINEL, railway applications |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Service specifications
7| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Other | DB9F-DB9M serial cable length (Part Number 4918418) | 1.83 | M | |
| Other | Extension DB9F to DB9M length (Part Number 3162851) | 30.48 | M | |
| Other | INLINE™5 datalink adapter current requirement | 250 | mA | at +8 VDC to +50 VDC |
| Other | USB cable length (Part Number 4918419) | 2 | M | |
| Other | USB cable length (Part Number 4918591) | 5 | M | |
| Voltage | INLINE™5 datalink adapter supply voltage (maximum) | +50 | VDC | power lamp fast flashing indicates greater than maximum |
| Voltage | INLINE™5 datalink adapter supply voltage (minimum) | +8 | VDC | power lamp slow flashing indicates less than minimum |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Recommended fluids
| Fluid | Grade | Standard | Ambient | Capacity | Notes |
|---|---|---|---|---|---|
| Engine oil | Cummins Engine Oil Recommendations Bulletin 3810340 | Used to analyze oil samples for high horsepower engines with Eliminator™ oil filter option. | |||
| Fuel | B100 biodiesel | ASTM D6751 | Must conform prior to blending; revised to include a cold soak test; stability requirement still in effect. | ||
| Fuel | B20 biodiesel blend | ASTM D7467 | Applies to biodiesel blends B6–B20; includes oxidation stability requirement; replaces Cummins' previous EMA B20 specification requirement. Must be purchased from a BQ9000 Certified Marketer; B100 must be sourced from a BQ9000 Accredited Producer. | ||
| Fuel | B5 biodiesel | All Cummins automotive and industrial engines are compatible with B5 biodiesel. | |||
| Fuel | biodiesel (Europe) | EN 14214 | Published by CEN, European Committee for Standardization. Equivalent biodiesel specifications required internationally. |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Procedures
3Connect the INLINE™5 Datalink Adapter to a Personal Computer installation
⚠ A fully populated USB cable, Part Number 4918419, or DB9F-DB9M serial cable, Part Number 4918418, must be used.
- Connect the DB9F-DB9M serial cable, Part Number 4918418, or USB cable, Part Number 4918419, to the computer.
- Connect the other end of that cable to the INLINE™5 datalink adapter, Part Number 3165033.
- Supply +8 VDC to +50 VDC at 250mA through the OEM connector or a separate power source.
- Connect the appropriate datalink cable to the INLINE™5 datalink adapter, Part Number 3165033.
- Connect the other end of the datalink cable to the vehicle cab or engine compartment datalink connector.
- Launch the electronic service tool application software.
Oil sampling for high horsepower engines with Eliminator™ oil filter option maintenance
- Take oil samples every 250 hours of operation.
- Analyze samples according to Cummins Engine Oil Recommendations Bulletin 3810340.
- Repeat for at least three oil change intervals to ensure consistent oil behavior.
Switching from petrodiesel to B20 on used engines maintenance
⚠ B20 has a solvent nature and may clean the vehicle fuel tank and lines.
- Install new fuel filters when switching to B20.
- Replace fuel filters at half the standard interval for the next two fuel filter changes.
- After the initial period, revert to intervals specified in the O & M manual.
- For EPA 2007 on-highway midrange engines, sample oil for the first 6 months to monitor fuel dilution.
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 Cummins/Onan QSK23?
The Cummins/Onan QSK23 is rated 665 kW standby (724.0 kVA).
What engine is in the Cummins/Onan QSK23?
The Cummins/Onan QSK23 is powered by the Cummins/Onan QSK23 engine.
What fuel type does the Cummins/Onan QSK23 take?
The Cummins/Onan QSK23 runs on 4 cycle, turbocharged.
What's the oil capacity on a Cummins/Onan QSK23?
The Cummins/Onan QSK23 engine in the Cummins/Onan QSK23 has an oil capacity of 12.0 liters.
What is the coolant capacity of the Cummins/Onan QSK23?
The Cummins/Onan QSK23 cooling system holds 110 liters (29.1 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.
What is the prime power rating of the Cummins/Onan QSK23?
The Cummins/Onan QSK23 is rated 582 kW prime (699 kVA), against 665 kW standby.
What is the dry weight of the Cummins/Onan QSK23?
The Cummins/Onan QSK23 has a dry weight of 3245 kg (7153 lb).
What voltages is the Cummins/Onan QSK23 available in?
The Cummins/Onan QSK23 is offered in 50 V, 60 V.
What alternator does the Cummins/Onan QSK23 use?
The Cummins/Onan QSK23 uses a 35A alternator.
Which oil filter part number does the Cummins/Onan QSK23 take?
The Cummins/Onan QSK23 uses oil filter part number LF9325.
Which fuel filter part number does the Cummins/Onan QSK23 take?
The Cummins/Onan QSK23 uses fuel filter part number FS1006.
Which air filter part number does the Cummins/Onan QSK23 take?
The Cummins/Onan QSK23 uses air filter part number AF25544.
Parts
4| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 204-009 | Acronyms and Abbreviations | Service part / kit | Amazon eBay | |
| 3822735 | Plastic bead blasting media | 1 | Service part / kit | Amazon eBay |
| 4021375 | QSK23 Troubleshooting and Repair Manual | 1 | Service part / kit | Amazon eBay |
| KS-E368R | Head Office | 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.
Fuel consumption
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| 126.0 | 33.3 | ||
| 25% | 50.0 | 13.2 | |
| 50% | 89.0 | 23.4 | |
| 75% | 126.0 | 33.3 | |
| Base | 75% | 126.0 | 33.3 |
| Continuous | 75% | 83.0 | 21.9 |
| Continuous | 100% | 154.44 | 40.8 |
| Prime | 25% | 37.5 | 10.125 |
| Prime | 50% | 67.5 | 18.45 |
| Prime | 75% | 90.0 | 24.6 |
| Prime | 100% | 150.0 | 39.6 |
| Standby | 25% | 49.0 | 12.9 |
| Standby | 50% | 83.0 | 21.9 |
| Standby | 75% | 115.0 | 30.3 |
| Standby | 100% | 173.0 | 45.7 |
Available documents
This page was generated from the 23 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.