MaxxForce® 7

MaxxForce® 7 Overview

The MaxxForce® 7 is a significantly upgraded V8 turbodiesel specifically designed to meet the needs of medium-duty commercial truck customers. These upgrades include:

  • High-pressure common-rail fuel system
  • Dual sequential turbochargers
  • Compacted graphite iron block

Together with our 30 years of V8 leadership, these features deliver a better performing engine with outstanding power, performance, reliability and fuel economy.


You need Flash 9 or above to view this content.

Get Adobe Flash Player


The MaxxForce 7 was designed for maximum reliability and serviceability. More robust components – starting with the high-strength CGI block – and reduced electrical connections mean more uptime and faster service turnarounds. Unaided cold-starting performance down to -20°F assures reliable operation with every turn of the key, using a proven intake air grid heater.

High-Pressure Common-Rail Fuel System

A major key to MaxxForce 7 performance is its advanced fuel system, which features high injection pressure of 1900 bar (approximately 28,000 psi) for precise fuel dosing, injection timing and optimal combustion. The results: better fuel efficiency, in-cylinder reduction of emissions, and one of the quietest running diesel engines in the industry.

Compacted Graphite Iron Block (CGI)

The MaxxForce 7 features the industry’s only Class 4-7 CGI block.  This incredibly strong platform handles the highest fuel pressures that deliver the best fuel combustion and reduces vibration and noise.  The MaxxForce 7’s compacted graphite iron block brings increased durability and lower noise without added weight, compared to typical gray iron. Because CGI has at least 75% higher tensile strength, 45% higher stiffness and near double the fatigue strength of gray iron, castings don’t have to be as thick and heavy in order to achieve the desired structural integrity and durability.

Dual Sequential Turbo And Advanced Air-Management

MaxxForce 7 engines use dual sequential turbochargers to deliver powerful performance for any job. The smaller, primary turbo responds quickly for immediate take-off at low engine speeds, and the larger, secondary turbo provides peak power at higher speeds and on steep grades.

The 2010 MaxxForce 7 provides big power in an efficient V-8 package. Ratings have been boosted up to 300 horsepower and 660 lb.-ft. of torque. The new dual sequential turbochargers design and high-pressure common-rail fuel system yield higher peak power for impressive acceleration, grade climbing and towing capability.

The industry’s most precise high-pressure fuel injection system features electronically-actuated piezo injectors that deliver up to five independent injections per cycle for smooth, full combustion. This results in low NVH and smooth acceleration for exceptional driveability.

The MaxxForce 7 offers an affordable business solution when viewed with complete drivetrain and vehicle package. Its advanced fuel and air-management systems provide outstanding fuel economy, especially in city cycle conditions. Combined with exceptional reliability and serviceability, this V-8 provides low cost of ownership over its extended service life.

  • Configuration: V-8
  • Displacement: 6.4 L (389 cu. in.)
  • Power Output: 220–300 hp (164–224 kW)
  • Peak Torque: 560–660 lb.-ft. (762-898 Nm)
  • Aspiration: Turbocharged
  • Combustion System: Direct Injection
  • Dry Engine Weight: 1,225 lbs. (556 kg)
  • B50 Design Life: 500,000 mi (805,627 km)

Preventative Maintenance Intervals

  • Change Engine Oil, Replace Oil Filter: 10,000 miles (16,100 km) / 350 hours / 1,000 gallons (3,800 L) / 6 months
  • Replace Fuel Filter: 30,000 miles (48,280 km)
  • Replace Coolant*: 300,000 miles (482,803 km) / 5 years / 12,000 hours
  • Valve Lash Adjustment: Not Required
  • Crankcase Breather: 60,000 (96,561 km)

*Add extender @ 150,000 miles (241,400 km) / 2.5 years / 6,000 hours