ISX15 for Motorhome (EPA 2010)

Power 550 - 600 hp
410 - 447 kW
Torque 1850 - 1950 lb-ft
2508 - 2644 N•m
Certification EPA 2010

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Beyond Every Expectation.

Cummins ISX15 is for the customer wanting the ultimate in driving performance - the kind you expect in a premium motorhome.  Plus, it achieves near-zero emissions levels without sacrificing the reliability or durability that you expect from a Cummins engine.

Plus, you get exclusive Cummins programs like Coach Care™ to meet your service needs as you travel across North America in your motorhome. All backed by the most extensive customer support network in North America.

For Cummins-branded merchandise, electronic tools, literature and more, visit our PowerStore web site.


Advertised Horsepower  600 hp  447 kW 
Peak Torque  1950 lb-ft  2644 N•m 
Governed Speed  2100 rpm 
Clutch Engagement Torque  1000 lb-ft  1356 N•m 
Number of Cylinders 
Oil System Capacity  14 U.S. gallons  52.9 liters
System Weight  3,186 lb  1,445 kg
Engine (Dry)  2,964 lb  1,344 kg  
Aftertreatment System*  222 lb  101 kg 

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


Engine Model  Advertised Horsepower (kW)  Peak Torque lb-ft (N•m) @ rpm   Governed Speed 
ISX15 600  600 (448)  1950 (2644) @ 1200  2100 
ISX15 550  550 (410)  1850 (2508) @ 1200  2100 

XPI Fuel System - Delivers a precise quantity of fuel at ultra-high pressures.  This, together with more robust electronic engine controls, enables multiple injection events per cycle. 

Single Overhead Cam - Improved XPI fuel system eliminates the need for a second camshaft.  This provides weight savings and simplifies operation.

VGT™ Turbocharger - Enhanced response and control with electric actuation for infinite adjustment, providing exact boost at any rpm. Sliding-nozzle design increases reliability and durability.

Cooled EGR - Next-generation system lowers combustion temperatures for reduced emissions and optimized fuel economy.

Fully Integrated Electronic Controls - A single, higher-capacity Electronic Control Module (ECM) controls everything from air intake to exhaust aftertreatment for peak performance and near-zero emissions.

Intebrake -  Even with one overhead cam, the ISX15 still has best-in-class braking horsepower (up to 600 bhp) for greater vehicle control with reduced service brake wear.

Cummins Aftertreatment System - The proven Cummins Particulate Filter reduces particulate matter by over 90%. In 2010 it is combined with Cummins Selective Catalytic Reduction (SCR) to meet emission standards while maintaining best-in-class performance, reliability and durability.

Duty Cycles*  Miles / Kilometers Hours Months  
Oil and Filter  15,000 mi (with CJ4 oil)
24,000 km
800 12
Fuel Filter  15,000 mi (with CJ4 oil)
24,000 km
800 12
Coolant Filter**  50,000 mi
80,000 km 
1,500 12
Valve Adjustment  250,000 mi
400,000 km 
Coalescing Filter  125,000 mi 200,000 km 3,000   
DEF Filter  200,000 mi (320,000 km) 
Particulate Filter Cleaning  200,000 - 400,000 mi
(320,000 - 640,000 km) 

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

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