The Cummins ISX is a Cummins in-line six-cylinder diesel engine for heavy duty trucks and coaches. QSX is the off-road version of ISX where Q stands for Quantum. QSX is used for construction and industrial equipment, marine vessels, and the oil and gas industry. Installed in particular on Versatile, New Holland tractors, Hyundai excavators, etc.
ISX coding originated from Interact system (IS) - a version of motors for installation in road vehicles with appropriate settings and minor design changes. The Cummins 15 ISX is widely used by mainline trucks Peterbilt, Kenworth, Volvo, Freightliner.
The Cummins 15 ISX engine is fuel efficient and has high thermal efficiency. The service life of the Cummins 15 ISX can easily exceed 1 million kilometers with timely maintenance and refueling with high-quality diesel fuel.