
PRODUCT Detail
The ISL is the most popular engine in the transit market, due to its high reliability, low maintenance and fuel efficiency. The ISL incorporates familiar, proven technologies and subsystems: cooled EGR, Cummins patented VG Turbo, High Pressure Common Rail fuel injection, and Cummins Particulate Filter. These technologies have been used in Cummins transit bus engines for years.
The ISL is also easy on the operating and maintenance budget. Based on one of the most fuel-efficient engines in the transit market, the ISL will help keep your fuel bill down. The ISL maintains its long maintenance intervals to make every dollar in your budget go further.
A wide variety of ratings and configurations are available to match your unique operating requirements. Horsepower ratings from 250-330 provide the right performance for any transit bus – 29-foot through 60-foot articulated buses. The ISL is also available in conventional driveline and hybrid-ready configurations. Regardless of your needs, the Cummins ISL is the right engine for every bus, every route.
In addition to our comprehensive base warranty, it’s backed by the biggest customer support network in North America.
For the latest news, sign up for our Bus News online newsletter today. For detailed information on Cummins Transit and Shuttle Buses, download our Transit/Shuttle Bus Brochure.
Advertised Horsepower | 250-330 hp | 187-246 kW |
Peak Torque | 730-1100 lb-ft | 990-1491 N•m |
Governed Speed | 2000-2200 | |
Clutch Engagement Torque | 500 lb-ft | 746 N•m |
Cylinders | 6 | |
Oil System Capacity | 7.3 U.S. gal | 27.6 liters |
System Weight Engine (dry) Aftertreatment* | 1,685 lb 1,635 lb 50 lb | 764 kg 742 kg 22 kg |
* Increase over standard muffler

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