Cummins is redefining efficiency for customers in 2017 with the newest generation of its L Series engines. The Cummins L9 diesel for 2017 delivers outstanding productivity and the best power-to-weight ratio in its class. Proven reliability keeps your trucks on the road longer. Faster, more accurate service provides even greater uptime, and customers can expect up to 15 percent better fuel economy over the engines of the last decade.

Redefining Performance 2017 L9 For Emergency Vehicles Fire and emergency vehicles are all about performance, readiness and reliability. Those three factors are what continue to make Cummins L9 the leading choice for first responders across North America.