ISB6.7 for Motorhome (2013)

Power 200 - 360 hp
149 - 268 kW
Torque 520 - 800 lb-ft
705 - 1085 N•m
Certification EPA 2013

Available Regions

US and Canada,  Russia,  Africa & Middle East,  Mexico,  Philippines,  Singapore,  Brazil,  Bolivia,  Uruguay,  Paraguay,  Argentina,  Colombia,  Central America,  Europe,  Japan,  Korea


The Most Popular Diesel Engine For RVs.

For years, no engine has combined proven reliability, power and towing capacity, fuel economy and high resale value better than the Cummins ISB6.7. Modifications to the turbocharging and control system have enabled lower emissions while delivering better fuel economy than that of prior models, lowering operating costs and leaving more dollars in your budget for trips you enjoy.

A Cummins-designed and manufactured aftertreatment system is fully integrated, and includes On-Board Diagnostics that continuously monitor engine and aftertreatment performance to ensure near-zero emissions.

Customizing the performance of your engine is possible through the use of Cummins PowerSpec, an online tool that lets you adjust operating parameters to match your need for enhanced fuel economy, higher performance or a balance between the two.

All of this is backed by unmatched support from the largest service network in North America, including the exclusive Coach Care™ program and 24/7/365 assistance from Cummins Care representatives at 1-800-DIESELS™ (1-800-343-7357).

For Cummins-branded merchandise, electronic tools, literature and more, visit the PowerStore.

Advertised Horsepower 200-360 hp 149-268 kW
Peak Torque 520-800 lb-ft 705-1,485 N•m
Governed Speed 2,600 rpm  
Clutch Engagement Torque 400 lb-ft 542 N•m
Number of Cylinders 6  
Biodiesel Compatibility Up to B20  
System Weight (dry) 1,357 lb 616 kg
Engine Model Advertised Horsepower (kW) Peak Torque lb-ft (N•m) @ rpm
ISB6.7 360 360 (268) 800 (1085) @ 1800
ISB6.7 340AD* 340 (254) 700 (949) @ 1600
ISB6.7 340 340 (254) 660 (895) @ 1600
ISB6.7 325 325 (242) 750 (1017) @ 1800
ISB6.7 300AD* 300 (224) 660 (895) @ 1600
ISB6.7 300 300 (224) 660 (895) @ 1600
ISB6.7 250AD* 250 (186) 660 (895) @ 1600
ISB6.7 240 AD* 240 (179) 560 (759) @ 1600
ISB6.7 220 AD* 220 (164) 520 (705) @ 1600
ISB6.7 200 AD* 200 (149) 520 (705) @ 1600

*does not have an air compressor

  • High Pressure Common Rail (HPCR) Fuel System – High injection pressures produce quick throttle response at every rpm, for safe entry onto highways. Optimized timing increases fuel efficiency while lowering emissions.
  • VGT™ Turbocharger From Cummins Turbo Technologies – This patented design is widely recognized as the industry leader for performance. Electric actuation provides quick throttle response and increased braking horsepower.
  • Cooled Exhaust Gas Recirculation (EGR) – The next-generation system lowers combustion temperatures for reduced emissions and optimized fuel economy.
  • High-Capacity Electronic Control Module (ECM) – A single ECM manages the entire engine and aftertreatment system for optimum performance and fuel economy. This ECM is used across the board for Cummins on-highway engines, to simplify servicing.
  • Cummins Aftertreatment System From Cummins Emission Solutions – This proprietary system consists of a Diesel Particulate Filter (DPF) and Selective Catalytic Reduction (SCR) technology, for near-zero emissions.
  • Fleetguard®Fuel Filters, Lube Filters And Diesel Exhaust Fluid (DEF) From Cummins Filtration – Fleetguard filters protect against corrosion and contaminants that can cause performance issues. High-quality DEF is readily available at all Cummins distributors, within Cummins Filtration’s vast North American distribution network and at major service stations and truck stops.
Duty Cycles Miles/ Kilometers Months
Oil and Filter 15,000 miles / 24,000 km 12
Fuel Filter* 15,000 miles / 24,000 km 12
Standard Coolant Change 60,000 miles / 96,000 km 24
Overhead Adjustment 150,000 miles / 240,000 km 48
Coalescing Filter Every 3rd to 4th oil change  
DEF Filter 200,000 miles / 320,000 km  
Particulate Filter Cleansing 200,000 miles / 320,000 km  

*with appropriate air filter

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