Specifications
| Prime power | 400 kW |
|---|---|
| Oil capacity | 7.3 L |
| Dry weight | 705 kg |
Engine
| Oil capacity | 27.6 L |
|---|---|
| Aspiration | Turbocompresseur à géométrie variable (VG Turbo) |
| Rated speed | 2100 rpm |
Filters for the Cummins/Onan ISL
6Engine-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 | P553000 | Lube Filter, Spin-On Full Flow | CUMMINS 3318853, CUMMINS 3825970, NAPA 1748, NAPA 1748XD | FridayParts $125.00 |
| Oil filter | P553548 | Lube Filter, Spin-On Combination | CUMMINS 3919562, CUMMINS 3973686, BALDWIN BD324, LOESING 025227 | KuduParts $48.00 FridayParts $49.99 |
| Fuel filter | P550879 | Fuel Filter, Spin-On | CUMMINS 4940647, BALDWIN BF7924, HYUNDAI 11QA70010, TEREX 219903 | buy |
| Fuel / water separator | P551122 | Fuel Filter, Water Separator Spin-On Twist&Drain | CUMMINS 3800394, CUMMINS 3944269, BALDWIN BF1233, HYUNDAI 11NA70010 | buy |
| Coolant filter | P552071 | Coolant Filter, Spin-On Sca Plus | CUMMINS 299080, CUMMINS 299880, NAPA 4071, TORO 012706560 | FridayParts $37.53 |
| Coolant filter | P554071 | Coolant Filter, Spin-On | CUMMINS 209604, CUMMINS 209606, NAPA 4071, WALGAHN-MOTORENTECHN 00811412 | FridayParts $397.60 |
Maintenance & consumables
for the Cummins/Onan ISL| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | ||||
| Fuel filter | Designed for filter change intervals of 18,000 miles (28,969 km), consistent with oil change intervals | — | 1000 hr | ||
| Oil filter | 20,000 miles (32,187 km) or 500 hours | — | 500 hr | ||
| Battery | Not explicitly stated in the document | — | |||
| Belt | Overhead adjustment 150,000 miles (241,402 km) or 5,000 hours | — | 5000 hr | ||
| Coolant | About 240,000 miles (386,243 km) with standard antifreeze/coolant; up to 600,000 miles (965,607 km) with an ESI antifreeze such as Fleetguard Compleat; add one bottle of an extender product at the halfway mark | — | |||
| Coolant filter | None* | — | |||
| Oil | 20,000 miles (32,187 km) or 500 hours | — | 500 hr | ||
| Spark plug | 150,000 miles / 5,000 hours / 48 months / 241,500 km | — | 5000 hr |
Service intervals
5| Item | Action | Hours | Months | Notes |
|---|---|---|---|---|
| Oil & Filter | Change | 500 hr | 12 mo | 20,000 miles / 32,000 km |
| Primary fuel filter | Replace | 500 hr | 12 mo | 20,000 miles / 32,000 km |
| Secondary fuel filter | Replace | 1000 hr | 12 mo | 40,000 miles / 64,000 km |
| Overhead adjustment | Adjust | 5000 hr | 48 mo | 150,000 miles / 241,500 km |
| Std. coolant change | Change | 24 mo | 240,000 miles / 385,000 km; N/A hours; long-life coolant/antifreeze formulas allow changes out to 600,000 miles (965,607 km) or 6 years |
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
45| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Other | Advertised horsepower | 246-298 | KW | |
| Other | Advertised horsepower | 250 | hp | special rating for fire and RV applications |
| Other | Advertised horsepower | 280 | hp | special rating for fire and RV applications |
| Other | Advertised horsepower | 300 | hp | |
| Other | Advertised horsepower | 310 | hp | |
| Other | Advertised horsepower | 315 | hp | |
| Other | Advertised horsepower | 330 | hp | |
| Other | Advertised horsepower | 330-400 | BHP | |
| Other | Advertised horsepower | 350 | hp | |
| Other | Advertised horsepower | 370 | hp | |
| Other | Advertised horsepower | 400 | hp | |
| Other | Advertised horsepower | 450 | hp | |
| Other | Advertised horsepower | 500 | hp | |
| Other | Advertised horsepower | 525 | hp | |
| Other | Bore | 4.49 in (114 mm) | ||
| Other | Certification | 2001-CERTIFIED | ||
| Other | Net weight | 1,555 | LB | |
| Other | Net weight | 705 | KG | |
| Other | Oil Capacity | 7.3 U.S. gallons (27.6 liters) | ||
| Other | Oil system capacity | 27.6 | LITERS | |
| Other | Oil system capacity | 7.3 | U.S. GALLONS | |
| Other | Peak torque | 1050-1250 | LB-FT | |
| Other | Peak torque | 1424-1695 | N·M | |
| Other | Stroke | 5.69 in (144.5 mm) | ||
| Other | Weight (Dry) | 1,555 lb (706 kg) | ||
| Speed | Governed speed | 2000 | RPM | |
| Speed | Governed speed | 2100 | RPM | |
| Speed | Governed speed | 2100-2200 | RPM | |
| Speed | Governed speed | 2200 | RPM | |
| Speed | Governed speed | 2600 | RPM | |
| Speed | Governed speed | 2800 | RPM | |
| Torque | Clutch engagement torque | 550 | LB-FT | |
| Torque | Clutch engagement torque | 746 | N·M | |
| Torque | Peak torque | 1050 | at 1400 RPM | |
| Torque | Peak torque | 1100 | lb-ft | @ 1300 RPM; special rating for fire and RV applications |
| Torque | Peak torque | 1150 | lb-ft | @ 1300 RPM |
| Torque | Peak torque | 1200 | at 1300 RPM | |
| Torque | Peak torque | 1450 | at 1300 RPM | |
| Torque | Peak torque | 1550 | at 1200 RPM | |
| Torque | Peak torque | 1650 | at 1200 RPM | |
| Torque | Peak torque | 600 | at 1600 RPM | |
| Torque | Peak torque | 660 | at 1600 RPM | |
| Torque | Peak torque | 730 | lb-ft | @ 1300 RPM; special rating for fire and RV applications |
| Torque | Peak torque | 900 | lb-ft | @ 1300 RPM; special rating for fire and RV applications |
| Torque | Peak torque | 950 | at 1400 RPM |
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 |
|---|---|---|---|---|---|
| Coolant | Extended Service Interval (ESI) antifreeze | Fleetguard Compleat | Standard antifreeze/coolant needs replacing at about 240,000 miles (386,243 km); ESI antifreeze such as Fleetguard Compleat goes up to 600,000 miles (965,607 km) if one bottle of an extender product is added at the halfway mark |
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
Which engine powers the Cummins/Onan ISL 400?
The Cummins/Onan ISL 400 is powered by the Cummins/Onan ISL engine.
What's the oil capacity on a Cummins/Onan ISL 400?
The Cummins/Onan ISL engine in the Cummins/Onan ISL 400 has an oil capacity of 27.6 liters.
What is the dry weight of the Cummins/Onan ISL 400?
The Cummins/Onan ISL 400 has a dry weight of 705 kg (1554 lb).
Parts
2model family| Part # | Description | Qty | System | |
|---|---|---|---|---|
| P01-275 | Oil Filter | 1 | Oil filter | Amazon eBay |
| P01-300 | Oil Filter | 1 | Oil filter | Amazon eBay |
Compiled from this model's family documentation — may include parts for closely-related variants. 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 10 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.