Every Destination.
Premium motorhome buyers don't settle for second best. That's why the number-one choice for diesel-powered motorhomes is Cummins. We offer a broad range of power for every size motorhome on the market. Plus, our 2007 engine and aftertreatment system reduces particulate matter by more than 90% without compromising performance, reliability or durability.
ISX Dual overhead cams, an integrated engine brake, and 525-650 horsepower from the most fuel efficient engine in its class.
ISM Designed for long-distance cruising up and down the interstate. With the highest power-to-weight ratio in its class, the ISM 450 and 500 horsepower ratings let you climb every mountain.
ISL The ideal engine for larger luxury motorhomes. With power up to 425
hp and 1200 lb-ft of torque, the ISL can accelerate at any speed and quickly
climb the steepest grades even when towing. The ISL offers a very strong
engine brake for extra braking capacity and added driver control. With
20,000 mile (32,000 km) oil change intervals, the ISL saves money and time when it comes
to maintenance.
ISC Built on a reputation of delivering additional performance when a
little extra is needed. With up to 360 horsepower and 1050 lb ft of torque,
the ISC is designed to provide the performance to deal with heavier loads
and steeper grades.
ISB The ISB XT combines the performance of 350 horsepower and the
industry-leading fuel economy of the legendary ISB to set a new standard for
the 350 hp motorhome. The "XT" in its name refers to the extra
displacement (6.7 liters), extra power for acceleration and climbing hills,
and extra stopping power of the integrated exhaust brake from its Variable
Geometry Turbocharger. The ISB family also includes 340 and 300 horsepower
ratings for motorhome applications along with the ISB AD models which are
used in front engine diesel chassis.
