ISL9 for Urban Bus & Shuttle (EPA 2010)


ISL9 for Urban Bus & Shuttle (EPA 2010)

The ISL9 for EPA 2010 delivers more of what you need from an urban transit bus engine.

Reliability of the ISL9 is enhanced with our proprietary XPI fuel system, designed and manufactured by Cummins with fewer moving parts than competitive units.  The XPI fuel system is capable of the highest injection pressures in the industry.  Fuel pressure is consistent at every rpm for stronger performance.  This fuel system, together with a more robust Electronic Control Module (ECM), enables multiple injection events for cleaner, quieter and more complete combustion.

Maintenance intervals and costs remain virtually the same as in previous years with the only additional item being the replacement of the Diesel Exhaust Fluid (DEF) filter. 

Ratings include our special hybrid diesel/electric engine.

All backed by the best customer support in the business.

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.


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

Product Finder Specifications

Certification Level EPA 2010
Power 280 - 330 hp / 209 - 246 kW
Torque 900 - 1100 lb-ft / 1220 - 1491 N•m


Engine Model Advertised hp (kW) Peak Torque lb-ft (N•m) @ rpm Governed Speed
ISL9 330 330 (246) 1100 (1491) @ 1400 2200 rpm
ISL9 280 280 (209) 900 (1220) @ 1300 2200 rpm
ISL9 330 H 330 (246) 1050(1425) @ 1500 2200 rpm


Maintenance Item Hours Months
Oil and Filter* 500 5
Primary Fuel Filter** 500 6
Secondary Fuel Filter 1,000 12
Coolant Filter None*** None***
Overhead Adjustment 5,000 48
Standard Coolant Change**** 2,000 24
Coalescing Filter 2,000  
DEF Filter 6,500  
Particulate Filter Cleaning 6,500  

*Assuming normal duty cycle **OEM-Supplied; intervals may vary ***If engine is equipped with an optional coolant filter, it will need to be replaced at the same intervals as the oil filter, SCA/DCA additive levels must be checked according to the interval listed in the Owners Manual ****Extended coolant drain/flush/fill intervals may be followed when certain requirements are met.  For more information on these requirements, refer to the Cummins Coolant Requirements and Maintenance Service, Bulletin 3666132

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  
ISL9 For EPA 2010 Urban Transit Flyer 4971186 Request View  Download
NRP - DPF There Is A Difference Brochure 5410774 Request View  Download
NRP - DPF There Is A Difference Brochure (French) 5410815 Request View  Download
NRP - DPF There Is A Difference Brochure (Spanish) 5410816 Request View  Download
Urban Transit (EPA 2010) Brochure 4971254 Request View  Download