ISB for Truck (EPA 07)


ISB for Truck (EPA 07)The ISB for 2007 runs cleaner, delivers better performance and maintains fuel economy comparable to EPA '02 compliant and certified engines. Ratings range from 200-325 hp. Plus, with an integrated compression brake as standard equipment, it even stops better. How did we make so many improvements and still meet stringent emissions controls? With a totally integrated system that includes our proven cooled-EGR subsystem, a High Pressure Common Rail fuel injection system, our patented VG Turbo, Cummins Particulate Filter and a crankcase ventilation system.

And these are just a starting list of some of the features. The ISB offers a choice of truck engines from 200 hp to 325 hp and a maximum 750 lb-ft of peak torque. These engines have the highest power-to-weight ratio in their class.

All backed by the best customer support in the business.

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, Medium-Duty Truck

See ISB PowerSpec Engine Features


The superior performance of the ISB comes from a constant flow of high-pressure fuel, injected with precise timing for optimum burn efficiency. Regardless of engine speed, the pressure inside the common-rail fuel system does not fluctuate. An increased number of injection events per cycle results in an ISB that runs stronger and quieter than ever before, with more horsepower and torque on the road than any other engine in its class.

Advertised Horsepower 200-325 hp 149-243 kW
Peak Torque 520-750 lb-ft 705-1017 N•m
Governed Speed 2600 rpm
Clutch Engagement Torque 400 lb-ft 542 N•m
Number of Cylinders 6
Oil System Capacity 4 U.S. gallons 15.1 liters
System Weight 1,190 lb 540 kg
Engine (Dry) 1,150 lb 522 kg
Aftertreatment* 40 lb 18 kg

*Increase over today's muffler

Engine Finder Specifications

Certification Level EPA 2007
Power 200 - 325 hp / 149 - 242 kW
Torque 520 - 750 lb-ft / 705 - 1017 N•m


ISB Ratings
Engine Model Advertised hp (kW) Peak Torque lb-ft (N•m) @ rpm
ISB 325 325 (243) 750 (1017) @ 1800
ISB 300 300 (224) 620 (841) @ 1600
ISB 280 280 (209) 660 (895) @ 1600
ISB 260 260 (194) 620 (841) @ 1600
ISB 240 240 (179) 620 (841) @ 1600
ISB 240 240 (179) 560 (759) @ 1600
ISB 220 220 (164) 520 (705) @ 1600
ISB 200 200 (149) 520 (705) @ 1600
 Additional ratings may be available. Check with your local Cummins distributor or dealer.


  • Displacement Increased to 6.7 Liters - 13% increase in displacement (from 5.9 to 6.7 liters) for increased power, performance and productivity.
  • Lowest Cost of Ownership - Low maintenance, high mpg, proven reliability and durability add up to superior lifetime value.
  • Low Noise Levels - Maintains industry leadership for quietest operation for increased driver comfort and safety.
  • Enhanced High Pressure Common Rail Fuel System - Delivers optimum balance of performance, emissions control and fuel economy across the entire operating range.
  • Full-Authority Electronic Controls - Higher microprocessor capacity and speed for optimum control of the engine and aftertreatment.
  • Cooled Exhaust Gas Recirculation - Lowers combustion temperatures for reduced emissions and optimized mpg.
  • Variable Geometry Turbocharger - Enhanced response and control with electric actuation for an infinite adjustment, providing exact boost across the operating range. Sliding-nozzle design increases reliability, durability.
  • Cummins Particulate Filter - Fully integrated for uncompromising performance, reliability. Reduces particulate matter 90%.
  • Crankcase Ventilation System - coalescing filter only needs replacement every 3rd to 4th oil change.
  • Low Maintenance - Long oil change intervals maintained. Cummins Particulate Filter will go 200,000-400,000 miles (320,000-640,000 km) in a typical duty cycle in most vehicles before it needs cleaning.


When it's time for maintenance, be sure to visit your authorized Cummins distributor or dealer.

  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 None* None* None*
Overhead Adjustment 150,000 mi / 241,000 km 5,000 48
Standard Coolant Change 60,000 mi / 96,000 km N/A 24
Coalescing Filter 60,000 mi / 96,000 km 2,500 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.

The Cummins Particulate Filter is designed to last the life of your engine. Regeneration is fully automated and controlled by the ECM. New for 2007 is an optional oil level sensor that operates like an electric dipstick, eliminating the need for the daily check of oil level.

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  
National Overhaul Warranty For MidRange Engines Flyer 4021552 Request View  Download
SmartSaver6 Injector Kit For ISB5.9 And ISB6.7 Engines Flyer - French 2878936 Request View  Download