ISL9 for Urban Bus & Shuttle (2013)


ISL9 for Urban Bus & Shuttle (2013)

A Better Route To Better Performance.

Cummins ISL9 clean diesel engine combines proven reliability with exceptional durability. Years of bus duty in tough urban routes provide ample evidence that its high power-to-weight ratio, replaceable wet liner design, roller followers, bypass oil filtration, targeted piston cooling and other heavy duty engine features set the standard for others to follow. It uses the XPI fuel system, and shares the same high capacity Electronic Control Module (ECM) with all other Cummins on-highway diesel engines, for powerful, smooth, quiet performance.

Plus, because cleaner is better, the ISL9 already meets 2014 GHG and fuel economy standards, getting 2 percent better fuel economy versus the previous model. Clean diesel ratings are available at 280 hp (209 kW) and 330 hp (246 kW) with up to 1100 lb-ft (1493 N•m) of peak torque. A diesel-electric hybrid rating is available at 330 hp (246 kW) with a peak torque of 1100 lb-ft (1493 N•m). The ISL9 has the street smarts to make every urban transit operation run better. Every bus. And every route.

Considering a Cummins engine purchase? For more information including pricing and additional technical information, please contact your Cummins representative. If you need help finding a representative, the Cummins Sales and Service Locator tool can help. PowerSpec

Cummins PowerSpec is an electronic tool that makes it possible to tailor the operation of Cummins engines in every on-highway application.

Available for: On-Highway, Urban Bus & Shuttle

See ISL PowerSpec Engine Features


Advertised Horsepower 280-330 hp 209-246 kW
Peak Torque 900-1100 lb-ft 1221-1493 N•m
Governed Speed 2200 rpm  
Clutch Engagement Torque 550 lb-ft 746 N•m
Number of Cylinders 6  
System Weight 1,914 lb 868 kg
Engine (Dry) 1,697 lb  770 kg
Aftertreatment System* 217 lb 98 kg

*Increase over standard muffler; does not include chassis OEM-supplied

Engine Finder Specifications

Certification Level EPA 2013
Power 280 - 330 hp / 209 - 246 kW
Torque 900 - 1100 lb-ft / 1220 - 1491 N•m


ISL9 330 330 (246) 1100 (1493) @ 1400 2200 rpm
ISL9 280 280 (209) 900 (1221) @ 1300 2200 rpm
ISL9 Hybrid 330 (246) 1100 (1493) @ 1400 2200 rpm


Cummins designs every component from air handling to the exhaust aftertreatment to work as a totally integrated system, so we can optimize performance better than other engine manufacturers.

VGT™ Turbocharger From Cummins Turbo Technologies
This patented design is widely recognized as the industry leader for performance. Electric actuation improves precision and responsiveness.

XPI Fuel System From Cummins Fuel Systems
Delivers superior performance at every speed. Multiple injection events per cycle improve fuel efficiency and enable smoother, quieter operation.

High-Capacity Electronic Control Module (ECM)
A single ECM manages the entire engine and aftertreatment system, for optimum performance. This ECM is used across the board for 2013 on-highway engines.

Fleetguard® Fuel Filters, Lube Filters And DEF From Cummins Filtration
Fleetguard filters protect against corrosion and contaminants with innovative technology such as NanaoNet™ media, which provides 10 times better protection than conventional fuel filters. High quality DEF is widely available at authorized Cummins and Fleetguard locations, as well as in bulk delivery.

Cummins Aftertreatment System From Cummins Emission Solutions
The proprietary system consists of a Diesel Particulate Filter (DPF) and Selective Catalytic Reduction (SCR) technology for near-zero emissions.

QuickServe® Online.
QuickServe Online sorts through 11 million Cummins engines and a million documents in seconds to find accurate, up-to-the-minute parts and service information about a customer’s engine. Every fact is instantly available, from part numbers, diagrams and supercessions to service bulletins and troubleshooting manuals, operation and maintenance manuals, literature, tools, catalogs and more. See for access information.

Genuine Cummins New And ReCon® Parts.
We stock parts for 100,000 individual part numbers at our Memphis Distribution Center, including both new (Genuine Cummins) and remanufactured (ReCon) parts. Our centralized distribution network assures next-day delivery almost everywhere in North America on parts orders received by midnight EST. Genuine Cummins Parts are of the highest quality and backed by the best parts warranty in the industry. And we are so confident in the reliability of Genuine Cummins ReCon parts that every one comes with a full Cummins warranty.

Training Every Technician.
Make sure your technicians have the training on all the latest technology. Cummins distributors offer local training using the same diagnostic procedures and repair techniques that are taught by our factory personnel.

Every Confidence.
All Cummins and Cummins Westport transit engines come with a standard 2-year/unlimited-mileage warranty with full parts and labor on warrantable failures.* This includes travel or towing when a bus is disabled or when further operation would cause additional damage. Major components are covered up to 3 years or 300,000 miles (482,804 km), whichever occurs first, on Cummins ISL9 and ISL G urban transit bus engines.

* Warrantable failures are those due to defects in materials or Cummins workmanship.

Better Extended Coverage.
For additional peace of mind, Cummins and Cummins Westport offer a variety of extended coverage plans to meet every transit operation’s needs. Check with your local Cummins distributor for details.

Better Service. Everywhere.
Cummins-powered urban transit buses are backed by the largest and most capable parts, service and support network in North America, with nearly 3,500 locations. Our authorized technicians are fully trained on all our engines, and have the necessary equipment and Genuine Cummins Parts to handle any type of service issue. Call 1-800-DIESELS™ (1-800-343-7357) for information and service locations.

Better Answers.
To learn more, visit or Assistance is also available by phone at 1-800-DIESELS™ (1-800-343-7357), or contact your local Cummins distributor or dealer. Product literature and additional information are always accessible online at You can also register all of your Cummins engines quickly and easily, and sign up for our Bus News electronic newsletter for important updates.


Maintenance Item Miles/Kilometers Hours Months
Oil and Filter 15,000 mi
24,000 km
500 6
Fuel Filter 15,000 mi
24,000 km
500 6
Coolant Filter 15,000 mi
24,000 km
500 6
Overhead Adjustment 150,000 mi
241,500 km
5,000 48
Standard Coolant Change 60,000 mi
96,000 km
 2,000 24
Coalescing Filter Every 3rd to 4th Oil Change Interval    
DEF Filter 200,000 mi
320,000 km
Particulate Filter Cleaning  200,000 mi  
320,000 km

For complete maintenance information, please consult your Owner’s Manual or Operations and Maintenance Manual, available on QuickServe Online.

Brochures Available

Title Bulletin Number Request View  
2013 ISL9 For Urban Bus Applications Flyer 4971347 Request View  Download
2013 Urban Transit Brochure 4971427 Request View  Download