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Whether you're rushing paramedics to an accident scene or responding to a brush fire, you can count on Cummins ISB. Every call. Every time. The 2007 ISB combines increased displacement (5.9 liters to 6.7 liters) and High Pressure Common Rail fuel injection with our patented Variable Geometry Turbo to deliver stronger performance at every rpm. Multiple injection events per cycle also make the ISB run extremely quiet.

Of course, the ISB also meets 2007 emissions requirements. The fact that it runs both stronger and cleaner is the result of our totally integrated design. Features include a proven cooled-EGR subsystem, High Pressure Common Rail fuel injection, the VG Turbo, Cummins Particulate Filter and a crankcase ventilation system, all developed to work together under the control of a single, more powerful ECM. The VG Turbo also doubles as an exhaust brake to increase stopping power. The result is an engine that delivers optimum performance, reliability, durability and fuel efficiency with increased safety.

The ISB is also designed to keep operating costs in check, with long maintenance intervals and excellent fuel economy. Ratings range from 260-350 hp.

 
Engine ModelAdvertised hpPeak TorqueGoverned Speed
ISB 350350750 @ 18002600
ISB 340340660 @ 16002900
ISB 325325750 @ 18002600
ISB 300300620 @ 16002600
ISB 280280660 @ 16002600
ISB 260260620 @ 16002600

Cummins ISB is designed for years of reliable service. Put all that together with Six Sigma design practices, and you've got an engine that is built to last, and deliver the lowest total cost of ownership of any engine in its class.
Specifications.
Advertised Horsepower260-350 hp194-261 kW
Peak Torque620-750 lb-ft841 - 1017 N•m
Governed Speed2600-2900 rpm
Clutch Engagement Torque400 lb-ft543 N•m
Number of Cylinders6
Oil System Capacity4.5 U.S. gallons17.03 liters
System Weight1,190 lb540 kg
Engine (Dry)1,150 lb522 kg
Aftertreatment*40 lb18 kg

*Increase over standard muffler

 
  • Displacement Increased to 6.7 Liters - 13% increase in displacement (from 5.9 to 6.7 liters) for increased power and performance.
  • 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.
Maintenance Intervals.
 Miles / KilometersHours Months
Oil and Filter15,000 mi / 24,000 km5006
Primary Fuel Filter15,000 mi / 24,000 km5006
Coolant FilterNone*None*None*
Overhead Adjustment150,000 mi / 241,500 km5,00048
Standard Coolant Change60,000 mi / 96,000 kmN/A24
Coalescing FilterEvery 3rd to 4th Oil Change
Particulate Filter200,000-400,000 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.

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



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