Operation and maintenance manual

QSB4.5 and QSB6.7 Cummins® Service Engine Model Product Identification
Section E - Engine and System Identification Page E-15
Cummins® Service Engine Model
Product Identification
General Information
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.