Cummins ISM Engines For Sale

Shop Cummins ISM diesel engines for sale at HD Engines for heavy-duty trucks, vocational vehicles, buses, motorhomes and other commercial applications. The Cummins ISM is a 10.8-liter inline six-cylinder diesel engine available in multiple horsepower, torque and emissions configurations.

Browse our available Cummins ISM engines to compare model year, horsepower, CPL, serial number, condition and included components. If you need help identifying the right replacement engine, call 786-377-5210 with your engine serial number, CPL and vehicle information.

Cummins ISM Engine History

Cummins introduced the ISM in late 1998 as part of its Interact System family of electronically controlled engines. Developed from the M11 Plus platform, the ISM combined an established heavy-duty engine design with updated electronic controls.

The Cummins ISM served a variety of applications, including highway trucks, vocational trucks, transit buses, motorhomes and fire apparatus. Different factory ratings provided horsepower and torque combinations suited to each application.

As emissions requirements changed, Cummins updated the ISM with technologies including cooled exhaust gas recirculation and variable geometry turbocharging. EPA 2007 configurations incorporated additional emissions equipment, including a Cummins particulate filter on applicable applications. 

Cummins documentation also shows application-specific ISM ratings, so the correct emissions configuration and original engine specifications should be confirmed before purchasing a replacement.

Cummins ISM Engine Specifications

Cummins ISM specifications vary by model year, application, CPL and factory rating. The following information provides an overview of the engine family. Always verify the specifications of the individual engine before purchasing.

Always confirm the specifications of the individual engine. The ratings above represent different factory configurations and do not indicate that every Cummins ISM can operate at every listed horsepower level.

Cummins ISM Horsepower and Torque Ratings

The Cummins ISM was offered in multiple horsepower and torque configurations. The correct rating depends on the engine's application, CPL, calibration and model year.

Examples from published EPA 2007 ISM ratings include:

Other ISM ratings were available for specific applications. Cummins lists ISM 450 and ISM 500 configurations for motorhome applications, while other application-specific ratings also existed. 

Because ratings can vary between applications, do not select a replacement engine based on horsepower alone. Match the engine's serial number, CPL, application and emissions configuration before ordering.

Cummins ISM Applications

The Cummins ISM was used across a range of heavy-duty and commercial applications, including:

• Highway trucks

• Heavy-duty trucks

• Vocational trucks

• Transit buses

• Motorhomes

• Fire apparatus

• Other specialty applications

The exact engine configuration can vary significantly between applications. A Cummins ISM from a motorhome, for example, should not automatically be treated as interchangeable with an ISM from a heavy-duty truck.

Choosing the Right Cummins ISM Replacement Engine

Selecting a Cummins ISM replacement engine requires more than matching the engine model or displacement. Different ISM configurations can have different electronics, emissions equipment, accessories and installation requirements.

Before ordering, have the following information available:

• Engine serial number: Helps identify the original engine and its build configuration.

• CPL number: Helps identify the engine's parts and configuration.

• Vehicle information: Include the year, make, model and VIN.

• Horsepower rating: Confirm the original factory rating.

• Emissions information: Check the engine family and certification information on the emissions label.

• Dataplate photos: A clear photo of the engine dataplate can help verify important identification details.

Also confirm what is included with the replacement engine. Depending on the individual listing, components such as the ECM, turbocharger, engine brake and other accessories may vary.

If you are unsure which Cummins ISM configuration you need, call 786-377-5210 and provide your engine identification and vehicle information before purchasing.

Find Your Cummins ISM Engine at HD Engines

Explore our Cummins ISM inventory to find an engine suited to your application. Review each listing for the engine’s year, horsepower, CPL, serial number, condition and included components.

Call 786-377-5210 for Cummins ISM availability and assistance identifying your replacement engine.