ISX for Truck and Bus (EPA 07)

Available for: On-Highway, Heavy-Duty Truck, School Bus

Overview

ISX for Truck and Bus (EPA 07)Cummins is meeting the 2007 emissions standards with a totally integrated system from air intake to exhaust aftertreatment.

It includes our proven cooled-EGR subsystem, an electrically actuated VG Turbo, a proprietary Cummins Particulate Filter and a crankcase ventilation system with a coalescing filter - all managed by a single Electronic Control Module. Every element has been designed and manufactured to optimize performance and minimize maintenance. Ratings range from 385-600 hp.

Design features include Dual Overhead Camshafts (DOHC) and the standard Intebrake™ system* which delivers up to 600 braking horsepower. Several engine features are available to help you improve mpg further such as Load-Based Speed Control and Gear-Down Protection. It's no wonder the ISX is the fuel economy leader.

All backed by the best customer support in the business.

*Standard on all ISX ratings except the ISX 385 ST.

PowerSpec

Cummins PowerSpec is an electronic tool that makes it possible to tailor the operation of Cummins engines in every on-highway application.

See ISX PowerSpec Engine Features

Specifications

The unique Dual Overhead Cam (DOHC) design of the ISX has a proven track record of superior performance - accelerating up a mountain or cruising down the backside. One camshaft drives the high-pressure fuel injection system. The second camshaft has lobes that optimize operation of the built-in Intebrake,*™ delivering up to 600 braking horsepower. The ISX For 2007 will deliver the same kind of durable, reliable, powerful performance you've come to expect.

The patented Holset VG Turbo continuously adjusts airflow to reduce turbo lag, improve transient response and increase vehicle performance. And now, electric actuation provides faster response and improved precision in adjusting airflow to the engine.

*Standard on all ISX ratings except the ISX 385 ST.

Specifications.
Advertised Horsepower 385-600 hp 287-447 kW
Peak Torque 1450-1850 lb-ft 1966-2508 N•m
Governed Speed 2000-2100 rpm
Clutch Engagement Torque 1000 lb-ft 1356 N•m
Number of Cylinders 6
Oil System Capacity 14 U.S. gallons 52.9 liters
System Weight 3,093 lb 1,403 kg
Engine (Dry) 3,021 lb 1,370 kg
Aftertreatment* 72 lb 33 kg

*Increase over muffler.

Engine Finder Specifications

Markets
Certification Level EPA 2007
Power 385 - 600 hp / 287 - 447 kW
Torque 1450 - 2050 lb-ft / 1966 - 2779 N•m

Ratings

Engine Model Advertised hp (kW) Peak Torque lb-ft (N•m) @ rpm
ISX 600 600 (447) 2050 (2779) @ 1200
ISX 600 600 (447) 1850 (2508) @ 1200
ISX 550 550 (410) 1850 (2508) @ 1200
ISX 525 525 (392) 1850 (2508) @ 1200
ISX 500 500 (373) 1850 (2508) @ 1200
ISX 500 500 (373) 1650 (2237) @ 1200
ISX 485 485 (362) 1850 (2508) @ 1200
ISX 485 485 (362) 1650 (2237) @ 1200
ISX 450 450 (336) 1650 (2237) @ 1200
ISX 450 450 (336) 1550 (2102) @ 1200
ISX 425 425 (317) 1650 (2237) @ 1200
ISX 400 400 (298) 1450 (1966) @ 1200
ISX SmartTorque Ratings
ISX 500 ST 500 (373) 1650/1850 (2237/2508) @ 1200
ISX 485 ST 485 (362) 1650/1850 (2237/2508) @ 1200
ISX 450 ST 450 (336) 1550/1750 (2102/2373) @ 1200
ISX 450 ST 450 (336) 1450/1650 (1996/2237) @ 1200
ISX 425 ST 425 (317) 1550/1750 (2102/2373) @ 1200
ISX 425 ST 425 (317) 1450/1650 (1966/2237) @ 1200
ISX 400 ST 400 (298) 1550/1750 (2102/2373) @ 1200
ISX 400 ST 400 (298) 1450/1650 (1966/2237) @ 1200
ISX 385 ST* 385 (287) 1450/1550 (1966/2102) @ 1200
ISX Vocational Ratings
ISX 500V 500 (373) 1850 (2508) @ 1200
ISX 500V 500 (373) 1650 (2237) @ 1200
ISX 435V 435 (325) 1450 (1966) @ 1200
*Intebrake™ not available with this rating. All ratings are 2000 rpm governed speed, except the SmartTorque ratings, which are at 2100 rpm.
 Additional ratings may be available. Check with your local Cummins distributor or dealer.

Features

  • Dual Overhead Camshafts - One camshaft drives high-pressure fuel injection for clean, responsive power. The second camshaft operates the intake and exhaust valves, with dedicated lobes for the integrated engine brake.
  • Cummins Intebrake™ - Up to 600 braking horsepower for greater vehicle control, reduced service brake wear.
  • Fully Integrated Electronic Controls - A single ECM (Electronic Control Module) controls the engine and aftertreatment. Also coordinates interaction with the transmission, ABS, engine brake, cooling fan and more.
  • Variable Geometry Turbocharger - Enhanced response and control with electric actuation for infinite adjustment, providing exact boost at any rpm. Sliding-nozzle design increases reliability, durability.
  • Cooled Exhaust Gas Recirculation - Lowers combustion temperatures for reduced emissions and optimized mpg.
  • 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.
  • Patented Mid-Stop Cylinder Liners - Robust design allows for variations in coolant chemistry.
  • High-Pressure Fuel Injection System - For cleaner, more complete combustion.
  • Low Maintenance - Advanced Fleetguard® ES System™ for extended service intervals. Drive up to 35,000 miles (56,000 km) between oil drains and filter changes in light-duty applications. 25,000 miles (40,000 km) in normal use.

Maintenance

See your Owner's Manual for every detail. And when it's time for maintenance, be sure to visit your authorized Cummins distributor or dealer.

Duty Cycle* Light Duty Normal Duty Severe Duty
Oil and Filter 35,000 mi
56,000 km
25,000 mi
40,000 km
15,000 mi
24,000 km
Fuel Filter 25,000 mi
40,000 km
25,000 mi
40,000 km
25,000 mi
40,000 km
Coolant Filter** 50,000 mi
80,000 km
50,000 mi
80,000 km
50,000 mi
80,000 km
Valve Adjustment 500,000 mi
800,000 km
500,000 mi
800,000 km
500,000 mi
800,000 km
Coalescing Filter 125,000 mi
200,000 km
125,000 mi
200,000 km
125,000 mi
200,000 km
Particulate Filter Cleaning 200,000-400,000 mi (320,000-640,000 km)

*Light Duty = >6.5 mpg, Normal Duty = 5.5-6.5 mpg, Severe Duty <5.5 mpg

**With appropriate filter

The Cummins Particulate Filter is designed to last the life of your engine. Regeneration is fully automated and controlled by the ECM.

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