The Cummins ISM Engine is a high-quality, reliable, and cost-effective used engine option. As a popular choice in the commercial trucking, fire apparatus, motor coach, transit bus, and recreational vehicle industries due to its robust design and proven reliability, Vaz Auto Solutions has the Cummins ISM Engine for sale. Whether you need an engine for a Class 8 truck, fire apparatus, coach, transit bus, RV, or industrial application, we've got you covered.
The Cummins ISM is the electronic successor to the legendary Cummins M11, one of the most successful mid-Class 8 diesel engines ever produced. The lineage runs:
| Detail | Description |
|---|---|
| 1994 to 1998: Cummins M11 (Mechanical) | The original mechanical M11, with mechanical injection pump and inline injectors. Renowned for simplicity and reliability. |
| 1998 to 2007: Cummins ISM (Early Electronic) | First electronic version, used HEUI (Hydraulically actuated Electronic Unit Injector) fuel system. EPA98 and EPA02 emissions. |
| 2007 to 2010: Cummins ISM (Late Electronic) | EPA07 and EPA10 emissions, DPF aftertreatment added 2007, SCR with DEF added 2010. Late production transitioned to high-pressure common rail fuel system. |
| 2010+: Cummins ISL9 / ISX | ISM production ended; lighter applications moved to ISL9, heavier to ISX. |
The ISM occupies a strategic position in the Cummins lineup between the lighter ISC (8.3L) / ISL (8.9L / 9L) and the heavier ISX (15L). At 10.8 liters displacement, the ISM provides excellent power-to-weight ratio and fuel consumption advantages compared to the bigger ISX for applications that don't need the full ISX's heavy-haul capability.
The Cummins ISM engine is known for its reliability, low operating costs, and exceptional performance across a wide range of applications, including trucks, fire apparatus, motor coaches, transit buses, school buses, RVs, and industrial machinery.
The Cummins ISM engine is synonymous with reliability. Its design for lower operating costs without compromising performance makes it an industry favorite for fire apparatus and motor coach operators in particular. Comparatively, while the Cummins ISX handles heavier long-haul Class 8 loads, the ISM's optimal performance for mid-weight applications cements its reputation for efficiency and total cost of ownership in vocational, fire, coach, and RV markets.
Our Cummins ISM engines for sale come with various special features to meet diverse needs:
| Item | Details |
|---|---|
| INCLUDED | Long block: cylinder block, crankshaft, connecting rods, pistons, camshaft, cylinder head, valve train, oil pan, valve covers. Turbocharger typically included. HEUI or common rail fuel injection components typically included from donor. |
| NOT INCLUDED | ECM (sold separately, matched to original engine VIN and chassis programming), wiring harness, DPF / SCR / DEF aftertreatment system components (EPA07+ variants, sold separately depending on completeness), starter, alternator, water pump, thermostat, engine mounts, transmission, accessories (fan clutch, AC compressor, air compressor). |
| Fluids | Drained before shipping. Refill with Cummins-approved heavy-duty diesel engine oil. |
| Provenance Note | Donor application disclosed (Class 8 truck, fire apparatus, motor coach, transit bus, RV, industrial). Generation authenticated (EPA98, EPA02, EPA07, EPA10). Fuel system documented (HEUI vs HPCR). Mileage documented where verifiable. |
| Core Note | No core charge. You are not required to return your old engine. |
The Cummins ISM fits the following major application categories:
| Vehicle | Compatibility |
|---|---|
| Class 8 Highway Trucks | Freightliner Cascadia, Kenworth T800, Peterbilt 379, International 9400i, Volvo VNL, Mack Granite, Western Star 4900 |
| Fire Apparatus | Pierce Arrow XT, Spartan ERV, Sutphen, Seagrave, Rosenbauer, HME, E-One |
| Motor Coaches | MCI, Prevost, Van Hool |
| Transit and School Buses | Blue Bird All-American, Thomas Built Saf-T-Liner, New Flyer Xcelsior, Gillig Phantom and Low Floor |
| Recreational Vehicles | Winnebago Journey, Tiffin Phaeton, Country Coach, Newmar, Foretravel, Monaco |
| Industrial / Off-Highway | Some applications in tractors, excavators, wheel loaders (less common than on-highway use) |
Tell us your specific chassis and we'll confirm matching ISM generation, ECM compatibility, and emissions configuration.
Every used Cummins ISM we ship goes through this process:
| Aspiration | Turbocharged |
|---|---|
| Bore X Stroke | 5.39 inches x 6.73 inches |
| Clutch Engagement Torque | 700 lb-ft |
| Compression Ratio | 15:1 to 18:1 |
| Cooling System | Liquid cooled |
| Fuel System | High-pressure common rail direct injection |
| Number Of Cylinders | 6 |
| Valvetrain | 4 valves per cylinder | Double overhead camshaft (DOHC) |
| Displacement | 10.8 liters |
| Power Output | 280 to 425 HP (209 to 317 kW) |
| Peak Torque | 1 | 150 to 1 | 550 lb-ft (1 | 559 to 2 | 102 N·m) |
| Governed Speed | 2 | 100 rpm |
| Engine Type | Inline 6-cylinder diesel |
| Manufacturer | Cummins Inc. |
| Engine Model | Cummins ISM (electronic successor to mechanical M11) |
| Production Years | 1998 to 2010 |
| Compatibility | 1998 Cummins ISM Engine |
| Price | $3 | 599.00 |
"I recently purchased a Cummins ISM engine from Vaz Auto Solutions, and I couldn’t be happier with my decision. The engine arrived in excellent condition, exactly as described, and it was a perfect fit for my heavy-duty truck. Installation was straightforward, and the performance has been outstanding. The power and torque are impressive, and it runs smoothly even under heavy loads. The customer service was top-notch, guiding me through the purchase process and answering all my questions promptly. Highly recommend this engine and seller!"
I bought a Cummins ISM engine from Vaz Auto Solutions for my bus fleet, and the experience has been mostly positive. The engine performs reliably and provides great fuel efficiency, which is crucial for long-distance routes. Shipping was fast, and the engine was well-packaged. I did have a minor issue with a missing part, but customer service was quick to resolve it and sent the part immediately. Overall, I’m satisfied with the purchase and the engine’s performance. It’s a solid choice for anyone needing a robust and efficient diesel engine.
Every used Cummins ISM engine sold by Vaz Auto Solutions is covered by a 15 day replacement warranty from the date of delivery.
To file a claim, contact us within 15 days of delivery at (240) 301-0095 or support@vazautosolutions.com.
