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When you start looking at motorhomes with a living room bigger than most condos, one thing is an absolute necessity: A Cummins ISM 500 or ISM 450, with all the power, smoothness and reliability to glide effortlessly up the peaks and through the valleys, even when towing a boat, car or trailer.

For years, the ISM has been a favorite among motorhome owners (and trucking fleets), for its reliable performance, excellent fuel economy, low maintenance and operating costs. In 2007, it's even better. There's a new crankcase ventilation system that's electronically managed for optimum efficiency.

The fully-integrated system includes our proven cooled-EGR subsystem, a high pressure fuel injection system, the patented VG Turbo and a crankcase ventilation system, all working together for optimum performance.

Every ISM is backed by the most extensive customer support network in the industry, with programs like Coach Care™ to meet your service needs as you travel across North America in your motorhome.

For Cummins-branded merchandise, electronic tools, literature and more, visit our PowerStore web site.

 
Engine ModelAdvertised hp (kW)Peak Torque lb-ft (N•m) @ rpmGoverned Speed
ISM 500500 (373)1550 (2102) @ 12002100
ISM 450450 (336)1550 (2102) @ 12002100
Specifications.
Advertised Horsepower450-500 hp336-373 kW
Peak Torque1550 lb-ft2102 N•m
Governed Speed2100 rpm
Clutch Engagement Torque700 lb-ft949 N•m
Number of Cylinders6
Oil System Capacity10.2 U.S. gallons38.6 liters
Engine (Dry)2,206 lb1,000 kg

The optional C Brake™ by Jacobs® is a compression brake designed specifically for the ISM. It significantly increases stopping power, reduces wear on service brakes, and provides driver comfort with added control. Together with the VG Turbo and integrated electronic controls, it adds up to 345 braking horsepower.

 
 Miles
Kilometers 		Months
Oil and Filter15,000 mi
24,000 km		12
Fuel Filter15,000 mi
24,000 km		12
Coolant Filter15,000 mi
24,000 km		12
Overhead Adjustment120,000 mi
192,000 km
Coalescing Filter150,000 mi
240,000 km		24

*Oil, fuel and water filters should be changed at every oil change.

See your Owner's Manual for every detail. And when it's time for maintenance, be sure to visit your authorized Cummins distributor or dealer.

Cummins ISM is fully compatible with long-life coolant/antifreeze formulas which allow changes out to 6 years. Follow maintenance guidelines recommended by the manufacturer for safe use with extended service intervals.

 
For complete maintenance information, please consult your Owner's Manual or Operations and Maintenance Manual.

Complete warranty details are provided in Cummins Bulletin 3381340
Coach Care™

Coach Care is a network of service centers dedicated to making every maintenance or repair event a pleasant experience. Every Coach Care facility is:

 

  • Designed to meet the needs of motorhome owners
  • A Cummins distributor location, fully certified by Cummins
  • Certified to work on most motorhome chassis
  • Capable of performing many appliance repairs (most locations)
  • Equipped with overnight parking, electrical hookups, sanitation and sewage disposal
  • Located near America's most popular motorhome destinations. Call 1-800-DIESELS (1-800-343-7657) for locations

 

For more information, check out the Coach Care section at www.funroads.com.




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