Cummins Every Time - Heavy-Duty Truck

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.

ISX 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.

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 today's muffler.

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.

Even with added emissions controls, the ISX will retain its fuel economy leadership. You can expect comparable mpg numbers to EPA '02-certified and compliant engines.

To achieve the highest possible fuel economy with an ISX, check out the SmartTorque ratings. These engine calibrations deliver up to 200 lb-ft of extra torque in the top gears, making it possible to run longer in top gear and reap fuel economy benefits, every mile.

Other engine features are available to help improve mpg further, including Load-Based Speed Control, Gear-Down Protection and idle management. They are easily set using Cummins PowerSpec, the online tool that describes every feature, gives recommended settings and lets you modify and optimize operation of your Cummins engines.

To improve fuel economy even further, get RoadRelay™ 4, the in-cab monitor that helps drivers improve their own skill level - and increase mpg by as much as 30%!

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.