Cummins Every Time - Urban Bus & Shuttle

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 and technical advice on the ISL, sign up for our Bus News online newsletter today. For detailed information on Cummins Transit and Shuttle Buses, download our Transit/Shuttle Bus Brochure.

Engine Model	Advertised hp	Peak Torque	Governed Speed
ISL 330	330	1100 @ 1300	2000
ISL 330*	330	1100 @ 1300	2000
ISL 280	280	900 @ 1300	2200
ISL 280*	280	900 @ 1300	2200
ISL 250	250	730 @ 1300	2200

* Special Hybrid rating

Specifications.

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

Avg. Vehicle Speed	Miles	Kilometers	Hours	Months
10 to 15 mph	6,000	9,650	500	6
8 to 10 mph	5,000	8,050	500	6
6 to 8 mph	4,000	6,450	500	6
4 to 6 mph	3,000	4,800	500	6
2 to 4 mph	1,500	2,400	500	6

	Miles Kilometers	Hours	Months
Primary Fuel Filter	every oil change	500	6
Secondary Fuel Filter	every 2nd oil change	1,000	12
Coolant Filter	None*	None*	None*
Overhead Adjustment	150,000 mi 241,500 km	5,000	48
Coalescing Filter	80,000 mi 128,000 km	2,000	24
Particulate Filter Cleaning	200,000-400,000 mi (320,000-640,000 km)

* If engine is equipped with an optional coolant filter, it will need to be replaced on the same intervals as the oil filter.

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.