Cummins unveils high-torque 600-hp ISX

Cummins Inc. unveiled at the Mid-America Trucking Show Wednesday, March 21, its most powerful ISX in years – a 600-hp engine with 2050 lb.-ft. of peak torque – to be available beginning this fall. The company also announced production availability of the ComfortGuard auxiliary power unit (APU). Cummins also announced the approval of biodiesel B20 blends for use in its 2002 and later emissions-compliant ISX, ISM, ISL, ISC and ISB engines.

The high-performance ISX is designed for heavy-haul customers, fleets and owner-operators who specialize in expedited freight – as well as “performance enthusiasts” in the trucking industry. The additional torque allows for constant road speed, even on steep inclines, thereby reducing the number of downshifts and lowering driver fatigue.

In addition to stronger pulling power, the ISX for 2007 also includes electric actuation on the patented VG Turbo, for improved engine response across the entire power range, Cummins says. The Intebrake system, an integrated compression brake that generates more than 600 braking horsepower, continues as standard equipment.

The ComfortGuard system features the ComfortGuard Cab Air system, which provides 12,000-BTU capacity in a space-saving evaporator section that mounts under the bunk. ComfortGuard also offers 4,000/8,000-BTU two-stage electric heat. The 120-volt power remains available from the APU receptacles for powering other loads, while the heating and cooling system runs at full capacity.