The Cummins ISL9 is the bigger brother of the ISB6.7. When a range of options is still desirable but you need a bit more power to get the job done, this engine delivers with a range of 345-380 horsepower.

Found in medium and heavy duty semi trucks, the ISL9 is a solid contender for heavier delivery jobs, dump trucks, and municipal uses. Several models of our Freightliner trucks can be equipped with this engine.

Engine Technology Within the Cummins ISL9

XPI Fuel System – The proven technology of the XPI common-rail fuel system delivers a precise quantity of fuel at ultra-high pressures. This, together with more robust electronic engine controls, enables multiple injection events per cycle. Flexibility in injection timing maximizes fuel economy and performance while decreasing exhaust emissions.

Heavy-Duty Design – Rugged features include replaceable wet liners, roller followers, by-pass oil filtration and targeted piston cooling for longer service in the toughest work environments.

VGT™ Turbocharger – The Cummins VGT Turbocharger is both simple and precise. Electric actuation allows infinite adjustment, providing the exact amount of boost necessary for superior response. The proven sliding-nozzle design has best-in-class reliability and durability.

Cooled EGR – This next-generation system lowers combustion temperatures for reduced emissions and optimized fuel economy.

Fully Integrated Electronic Controls – A single higher-capacity ECM controls everything from air intake to exhaust aftertreatment for peak performance and near-zero emissions.

Cummins Aftertreatment System – The proven Cummins Particulate Filter reduces particulate matter by over 90%. In 2010 it is combined with Cummins SCR to meet emissions standards while maintaining best-in-class performance, reliability and durability. Cummins SCR technology has been proven in over 200,000 European vehicles and uses Diesel Exhaust Fluid (DEF) to achieve NOx emissions at near-zero levels.

The ISL9 Availability

The Cummins ISL9 Engine is available in the following Freightliner semi truck models:

Browse our inventory of new semi trucks to find semi trucks featuring this engine near you!