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With hundreds of millions of miles of operation in bus fleets worldwide, Cummins ISM has earned its reputation for reliability and durability. Key technologies like the cooled-EGR subsystem, VG Turbo, and electronic fuel injection have been used on the ISM since 2002.

Even the newest emissions control technology, particulate filtration, is not new. Thousands of Cummins-powered buses equipped with Cummins Particulate Filters are in operation in North America today. Every Cummins system is designed with performance and reliability in mind.

Higher fuel costs are stretching already tight operating budgets. Transit operators can turn to Cummins ISM to control and reduce costs, with excellent fuel economy in the bus market and low maintenance costs.

The ISM is available in the configuration you require. The ISM has ratings of 280 hp or 330 hp for 40- or 60-foot transit buses. It is compatible with all major transmission models and is easily tailored to the needs of specific applications.

In addition to our comprehensive base warranty,  Cummins engines are backed by nearly 3,500 authorized parts and service outlets in North America.

To keep up on the latest news and technical advice on Cummins ISM, sign up for our Bus News e-mail newsletter today. For detailed information on Cummins Transit and Shuttle Buses, download our Transit/Shuttle Bus Brochure.

 

Engine ModelAdvertised hpPeak TorqueGoverned Speed
ISM 3303301150 @ 12002100
ISM 280280925 @ 14002100
Specifications.
Advertised Horsepower280-330 hp209-246 kW
Peak Torque925-1150 lb-ft1254-1559 N•m
Governed Speed2100 rpm
Clutch Engagement Torque700 lb-ft949 N•m
Cylinders6
Oil System Capacity10.2 U.S. gal38.6 liters
System Weight
Engine (dry)
Aftertreatment*
2,268 lb
2,206 lb
62 lb
1,028 kg
1,000 kg
28 kg

* Increase over standard muffler

 

Oil and filter changes vary depending on your average vehicle speed. Please see the chart below to check the correct oil and filter changes for your operation.

Avg. Vehicle SpeedMilesKilometers
12 to 14 mph7,00011,000
10 to 15 mph6,0009,500
8 to 10 mph5,0008,000
6 to 8 mph3,5005,500
4 to 6 mph2,5004,000
 
 MilesKilometers
Fuel Filter15,00024,000
Coolant Filter15,00024,000
Valve Adjustment120,000192,000
Particulate Filter Cleaning200,000-400,000320,000-640,000

The Cummins Particulate Filter is designed to last the lifetime of your engine.

See Owner's Manual for every detail. And when it's time for maintenance, be sure to visit your Cummins distributor for fast, accurate service.

 

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

For complete warranty details, please see the Worldwide Bus warranty brochure (3381278) or contact your local Cummins distributor.