The Cummins® Service Engine Model Nomenclature procedure describes how engines are identified within Cummins service organization. This method was introduced for models after and including manufacture year 2007.

Electronic engines are identified by the first two letters, either an "IS" for On-Highway automotive or "QS" for Off-Highway industrial market applications.

The third letter is the engine platform designation followed by the engine liter size.

If the engine operates on a fuel type other than diesel, the type will be identified after the liter size.

The control system is identified with the letters "CM" followed by the control system model number.

The technology identifier after the control system designates the prevailing technology used with the engine. (See table in this procedure for letter designations.)

Example:

1. On-Highway automotive "X" 15 liter engine
2. Control system number 871
3. Technology supported; Electric EGR and Diesel Particulate Filter