MaxxForce® Engines

Power for International Trucks

The most complete lineup of integrated engines on the market today also features MaxxForce Advanced EGR. It's the only no-hassle solution certified to meet 2010 EPA requirements.

                           

DuraStar Class 6 & 7 Maxxforce Engines | View DuraStar Engines

The Maxxforce 7 offers outstanding fuel economy, power, performance, reliability and durability, making it the perfect engine for your pick up & delivery truck.

• DuraStar Class 6 & 7 Maxxforce Engines
• DuraStar Engines
• Durable Utility Truck Engines
• 220-HP DuraStar Maxxforce Engine
• Durable Government Truck Engines
• Durable Propane Truck Engines
• Durable Waste Collection Truck Engines
• Durable Landscaping Truck Engines
• Durable Recovery Truck Engines
• Maxxforce for DuraStar Trucks
• Maxxforce 220-300 hp Engines
• Maxxforce for DuraStar construction trucks
• Maxxforce for DuraStar emergency trucks

220-HP DuraStar Maxxforce Engine | Durable Utility Truck Engines

The Maxxforce 7 is perfect for your utility DuraStar 6 and 7 Truck. Visit us here to check out our 220-300 HP Maxxforce utility engines!

DuraStar Class 6 & 7 Maxxforce Engines | View Government Engines

The Maxxforce 7 is perfect for your Government DuraStar 6 and 7 Truck. Visit us here to check out our 220-300 HP Maxxforce Government engines!

220-HP DuraStar Maxxforce Engine: Durable Propane Truck Engines

The Maxxforce 7 is perfect for your propane DuraStar 6 and 7 Truck. Visit us here to check out our 220-300 HP Maxxforce propane engines!

220HP DuraStar Maxxforce Engine: Durable Waste Collection Engines

The Maxxforce 7 is perfect for your waste collection DuraStar 6 and 7 Truck. Visit us here to check out our 220-300 HP Maxxforce waste collection engines!

220HP DuraStar Maxxforce Engine: Durable Landscaping Engines

The Maxxforce 7 is perfect for your landscaping DuraStar 6 and 7 Truck. Visit us here to check out our 220-300 HP Maxxforce landscaping engines!

220HP DuraStar Maxxforce Engine: Durable Recovery Engines

The Maxxforce 7 is perfect for your recovery DuraStar 6 and 7 Truck. Visit us here to check out our 220-300 HP Maxxforce recovery engines!

Maxxforce 220-300 hp Engines: View Maxxforce for DuraStar Trucks

The DuraStar is the perfect platform for the Maxxforce 7. View International Trucks Newly Designed Fuel Efficient Maxxforce Engines for DuraStar Type Trucks.

Maxxforce 220-300 hp Engines: View DuraStar Trucks for Construction

The DuraStar is the perfect platform for the Maxxforce 7. View International Trucks Newly Designed Fuel Efficient Engines for DuraStar construction Trucks.

Maxxforce 220-300 hp Engines: View DuraStar Trucks for Emergency

The DuraStar is the perfect platform for the Maxxforce 7. View International Trucks Newly Designed Fuel Efficient Engines for DuraStar emergency Trucks.

DuraStar

MaxxForce 7

Engine

Impressive Fuel Efficiency, Power and Quietness

215-300 hp

560-860 lb.-ft. of torque

The DuraStar® is the perfect platform for the MaxxForce® 7. The newly-designed MaxxForce® 7 features the industry's most precise high-pressure common-rail fuel injection system,plus an advanced air management system, producing outstanding fuel economy, power, performance, reliability and durability. All that is accomplished with low noise, making the MaxxForce® 7 ideal for in-city applications.

• EPA compliant with MaxxForce Advanced EGR, the only no-hassle emissions solution for 2010 standards
• Best in class horsepower and torque
• The quietest V8 diesel engine in North America, registering only 68.9 dBA in a low idle test
• 13% more fuel-efficient than previous models
• A DC-actuated turbocharger provides impressive acceleration, grade climbing, towing capability and high-altitude performance
• For city routes, double-digit percentage fuel economy improvement is possible when the transmission and drivelines are optimized

                         

220-HP DuraStar Maxxforce Engine | Durable Delivery Truck Engines

The Maxxforce 7 is perfect for your pick up & delivery DuraStar 6 and 7 Truck. Visit us here to check out our 220-300 HP Maxxforce engines!

• 220-HP DuraStar Maxxforce Engine
• Durable Delivery Truck Engines

DuraStar

MaxxForce 7

Spec

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 Life

350,000 Miles (603,504 km)

Valves Per Cylinder

4

Cylinder Design

Parent Bore

Block Reinforcement

Single-Piece Bed Plate, Retains all 4 Bolt Bearing Caps

Fuel System

Electro-Hydraulic Unit Injector G2

Download MaxxForce® 7 Brochure PDF

                         

215-300 HP Maxxforce DT Engine | View DuraStar Replacement Engines

The Maxxforce DT is perfect for your pick up & delivery DuraStar 6 and 7 Truck. Visit us here to check out our 215-300 HP Maxxforce engines!

• 215-300 HP Maxxforce DT Engine
• DuraStar Replacement Engines
• View DuraStar Utility Engines
• View DuraStar Government Engines
• View DuraStar Propane Engines
• View DuraStar Waste Collection Engines
• View DuraStar Landscaping Engines
• View DuraStar Recovery Engines
• Maxxforce Engines
• International Trucks 220-300 hp Engines
• Maxxforce Engines for construction trucks
• Maxxforce Engines for emergency trucks

215-300 HP Maxxforce DT Engine | View DuraStar Utility Engines

The Maxxforce DT is perfect for your Utility DuraStar 6 and 7 Truck. Visit us here to check out our 215-300 HP Maxxforce utility engines!

215-300 HP Maxxforce DT Engine | View DuraStar Government Engines

The Maxxforce DT is perfect for your Government DuraStar 6 and 7 Truck. Visit us here to check out our 215-300 HP Maxxforce Government engines!

215-300 HP Maxxforce DT Engine | View DuraStar Propane Engines

The Maxxforce DT is perfect for your propane DuraStar 6 and 7 Truck. Visit us here to check out our 215-300 HP Maxxforce propane engines!

215-300 HP Maxxforce DT Engine | View Waste Collection Engines

The Maxxforce DT is perfect for your waste collection DuraStar 6 and 7 Truck. Visit us here to check out our 215-300 HP Maxxforce waste collection engines!

215-300 HP Maxxforce DT Engine | View Landscaping Engines

The Maxxforce DT is perfect for your landscaping DuraStar 6 and 7 Truck. Visit us here to check out our 215-300 HP Maxxforce landscaping engines!

215-300 HP Maxxforce DT Engine | View Recovery Engines

The Maxxforce DT is perfect for your recovery DuraStar 6 and 7 Truck. Visit us here to check out our 215-300 HP Maxxforce recovery engines!

International Trucks 220-300 hp Engines: View Maxxforce Engines

The DuraStar is the perfect platform for the Maxxforce 7. View International Trucks Newly Designed Fuel Efficient Maxxforce Engines for DuraStar Type Trucks.

International Trucks 220-300 hp Engines: View Maxxforce Engines

The DuraStar is the perfect platform for the Maxxforce 7. View International Trucks Newly Designed Fuel Efficient Engines for DuraStar construction Trucks.

International Trucks 220-300 hp Engines: View Maxxforce Engines

The DuraStar is the perfect platform for the Maxxforce 7. View International Trucks Newly Designed Fuel Efficient Engines for DuraStar emergency Trucks.

DuraStar

MaxxForce DT

Engine

Legendary Durability and Performance

215-300 hp

560-860 lb.-ft. of torque

The MaxxForce® DT powers the DuraStar® to its full potential. It has a full range of automatic and manual driveline options and thousands of possible build configurations to meet the demands of any application. Its reliability, durability, serviceability and high resale value mean the MaxxForce® DT brings real success to your operation.

• EPA compliant with MaxxForce Advanced EGR, the only no-hassle emissions solution for 2010 standards
• Electro-hydraulic Generation Two fuel system make it 9% more fuel-efficient than previous models
• Premium plateau-honed wet-sleeve design provides heavy-duty durability characteristics of big bore engines, plus easy rebuildability
• Mechanical roller followers allow 70,000 more miles before lash adjustments than the competition
• Four valves per cylinder provide better breathing, performance and lower emissions
• Named by Diesel Power magazine one of the "Top 10 Diesel Engines -Ever."

                         

DuraStar

MaxxForce DT

Spec

Engine Type

Diesel, 4-Cycle

Configuration

Inline 6-Cylinder

Displacement

7.6 L (466 cu. in.)

Bore & Stroke

4.49 in. & 4.68 in. (11.7 cm & 11.9 cm)

Compression Ratio

16.4:1

Aspiration

< 230 hp Aftercooler only

Combustion System

Direct Injection

Engine Lubrication

30 Quarts(28 L)

Total Engine Weight (Dry)

1,425 lbs. (646 kg)

Dimensions

< 230 hp L 45 in. x W 42 in. x H 43 in.

Valves

4 Valves per Cylinder

Cylinder Design

Wet-Replacable, Induction/Hardened Cylinder Sleeves

Fuel System

Electro-Hydraulic Unit Injector G2

Download MaxxForce® DT Brochure PDF

             

300-330 HP Maxxforce 9 Engine | DuraStar Engine Upgrades

With a full range of automatic and manual driveline options and thousands of potential build configurations, Maxxforce 9 is the perfect engine for your DuraStar.

• 300-330 HP Maxxforce 9 Engine
• DuraStar Engine Upgrades
• Waste Collection Engine Upgrades
• DuraStar Propane Engine Upgrades
• DuraStar Government Engine Upgrades
• DuraStar Utility Engine Upgrades
• DuraStar Landscaping Engine Upgrades
• DuraStar Recovery Engine Upgrades
• Maxxforce Engines
• International Trucks 300-330 hp Engines
• Maxxforce Engines for construction trucks
• Maxxforce Engines for emergency trucks

300-330 HP Maxxforce 9 Engine | DuraStar Utility Engine Upgrades

With a full range of automatic and manual driveline options and thousands of potential build configurations, Maxxforce 9 is the perfect utility engine.

300-330 HP Maxxforce 9 Engine | DuraStar Government Engine Upgrades

With a full range of automatic and manual driveline options and thousands of potential build configurations, Maxxforce 9 is the perfect Government engine.

300-330 HP Maxxforce 9 Engine | DuraStar Propane Engine Upgrades

With a full range of automatic and manual driveline options and thousands of potential build configurations, Maxxforce 9 is the perfect propane engine.

300-330 HP Maxxforce 9 Engine | DuraStar Waste Collection Engine

With a full range of automatic and manual driveline options and thousands of potential build configurations, Maxxforce 9 is the perfect waste collection engine.

300-330 HP Maxxforce 9 Engine | DuraStar Landscaping Engine

With a full range of automatic and manual driveline options and thousands of potential build configurations, Maxxforce 9 is the perfect landscaping engine.

300-330 HP Maxxforce 9 Engine | DuraStar Recovery Engine

With a full range of automatic and manual driveline options and thousands of potential build configurations, Maxxforce 9 is the perfect recovery engine.

International Trucks 300-330 hp Engines: View Maxxforce Engines

Maxxforce 9 & 10 300-330 hp engines are perfect for DuraStar type trucks. Check out all the on-highway applications that these International Trucks engines.

International Trucks 300-330 hp Engines: View Maxxforce Engines

Maxxforce 9 & 10 300-330 hp engines are perfect for DuraStar construction trucks. Check out all the Maxxforce engines for DuraStar construction trucks.

International Trucks 300-330 hp Engines: View Maxxforce Engines

Maxxforce 9 & 10 300-330 hp engines are perfect for DuraStar emergency trucks. Check out all the Maxxforce engines for DuraStar emergency trucks.

DuraStar

MaxxForce 9

Engine

Rock Solid for the Toughest Jobs

300-330 hp

860-950 lb.-ft. of torque

With a full range of automatic and manual driveline options and thousands of potential build configurations, MaxxForce® 9 is made to serve the broadest range of non-highway applications. Navistar engineers have carried forward the proven technologies and components of a time-tested platform like premium plateau-honed cylinder design, reinforced bearing-cap ladder and rugged single-box ECM.

• EPA compliant with MaxxForce Advanced EGR, the only no-hassle emissions solution for 2010 standards
• Premium plateau-honed wet-sleeve design provides heavy-duty durability characteristics of big bore engines
• A new regulated two-stage turbocharger and upgraded cooling system provide outstanding boost and response for every application
• The electro-hydraulic high-pressure fuel system features new high-efficiency injector nozzles and advanced electronic control strategies for fuel economy gains
• Increased 9.3-liter displacement by longer stroke, meet the requirements of mroe demanding applications

                           

DuraStar

MaxxForce 9

Spec

Engine Type

Diesel, 4-Cycle

Configuration

Inline 6-Cylinder

9.3 L (570 cu. in.)

Bore & Stroke

4.59 in. & 5.75 in. (11.7 cm & 14.6 cm)

Compression Ratio

Displacement

17.2:1

Aspiration

Two-Stage Turbochargers, Intercooler & Aftercooler

Combustion System

Direct Injection

Engine Lubrication

30 Quarts(28 L)

Total Engine Weight (Dry)

1,425 lbs. (646 kg)

Dimensions

L 45 in. x W 42 in. x H 47 in.

Valves

4 Valves per Cylinder

Cylinder Design

Wet-Replacable, Induction/Hardened Cylinder Sleeves

Fuel System

Electro-Hydraulic Unit Injector G2

Download MaxxForce® 9 Brochure PDF

    

Maxxforce Engines for ProStar Trucks: View Liquid Dry Bulk Engines

International Trucks Maxxforce engines for ProStar liquid or dry bulk trucks are an industry standard. View different horsepower ranges here.

• Maxxforce Engines for ProStar Trucks
• Liquid Dry Bulk Engines

ProStar

MaxxForce 11

Engine

Tough, Reliable and Ready to Take on Anything

330-390 hp

1,250-1,450 lb.-ft. of torque

Designed specifically for International brand heavy vehicles, with a combination of technologically advanced materials and components, MaxxForce® Big Bore engines deliver outstanding fuel economy, excellent power characteristics, an exceptionally smooth, quiet ride and high strength without the added weight. Navistar's MaxxForce Big Bore engines have revolutionized how the world looks at Class 8 commercial diesels.

• EPA compliant with MaxxForce Advanced EGR, the only no-hassle emissions solution for 2010 standards
• A Compacted Graphite Iron cylinder block is 40% stiffer with 75% higher tensile strength, and 200% greater fatigue resistance than iron used in other Class 8 diesel engines
• Low vibration levels prolong the life of the engine by protecting it from ordinary wear and tear
• Fuel system combined with twin series turbo chargers, delivers peak torque at a lower RPM, which allows for earlier upshifts when accelerating and fewer downshifts when climbing hills
• Internal testing has shown a 2.4% fuel efficiency advantage over the leading I5L engine
• Over 500lbs lighter than the nearest I5L engine with similar power output
• Peak torque is achieved at 1000 RPM (just over idle) and sustains at higher RPMs for a more responsive off-the-line driving experience

         

ProStar

MaxxForce 11

Spec

Engine Type

Diesel, 4-Cycle

Configuration

Inline 6-Cylinder

Displacement

10.5 L (641 cu. in.)

Bore & Stroke

4.72 in. & 6.10 in. (12 cm & 15.5 cm)

Compression Ratio

16.5:1

Aspiration

Dual Staged Turbochargers, Intercooler & Aftercooler

Combustion System

Direct Injection

Engine Lubrication

42 Quarts(40 L)

Total Engine Weight (Dry)

2,000 lbs. (1,089 kg)

Dimensions

L 59 in. x W 37 in. x H 49 in.

Valves

4 Valves per Cylinder, Overhead Cam Actuated

800 RPM Torque Range (lbs/ft)

660-830

Block

CGI

Emissions Technology

EGR-DPF

Fuel System

Bosch High Pressure, Common Rail, Non VG

Download MaxxForce® 11 Brochure PDF

         

ProStar Maxxforce Engines for Liquid of Dry Bulk: View Engines

Maxxforce 13 410-475 hp Big Bore engines were designed for the ProStar Truck. View liquid or dry bulk Maxxforce 13 engines here.

• ProStar Maxxforce Engines for Liquid of Dry Bulk
• Engines

ProStar

MaxxForce 13

Engine

Tough, Reliable and Ready to Take on Anything

410-475 hp

1,450-1,700 lb.-ft. of torque

Designed specifically for International brand heavy vehicles, with a combination of technologically advanced materials and components, MaxxForce® Big Bore engines deliver outstanding fuel economy, excellent power characteristics, an exceptionally smooth, quiet ride and high strength without the added weight. Navistar's MaxxForce Big Bore engines have revolutionized how the world looks at Class 8 commercial diesels.

• EPA compliant with MaxxForce Advanced EGR, the only no-hassle emissions solution for 2010 standards
• A Compacted Graphite Iron cylinder block is 40% stiffer with 75% higher tensile strength, and 200% greater fatigue resistance than iron used in other Class 8 diesel engines
• Low vibration levels prolong the life of the engine by protecting it from ordinary wear and tear
• Fuel system combined with twin series turbo chargers, delivers peak torque at a lower RPM, which allows for earlier upshifts when accelerating and fewer downshifts when climbing hills
• Internal testing has shown a 2.4% fuel efficiency advantage over the leading I5L engine
• Over 500lbs lighter than the nearest I5L engine with similar power output
• Peak torque is achieved at 1000 RPM (just over idle) and sustains at higher RPMs for a more responsive off-the-line driving experience

         

ProStar

MaxxForce 13

Spec

Engine Type

Diesel, 4-Cycle

Configuration

Inline 6-Cylinder

Displacement

12.4 L (758 cu. in.)

Bore & Stroke

4.96 in. & 6.54 in. (12.6 cm & 16.6 cm)

Compression Ratio

16.5:1

Aspiration

Dual Staged Turbochargers, Intercooler & Aftercooler

Combustion System

Direct Injection

Engine Lubrication

42 Quarts(40 L)

Total Engine Weight (Dry)

2,400 lbs. (1,089 kg)

Dimensions

L 59 in. x W 37 in. x H 49 in.

Valves

4 Valves per Cylinder, Overhead Cam Actuated

800 RPM Torque Range (lbs/ft)

830-960

Block

CGI

Emissions Technology

EGR-DPF

Fuel System

Bosch High Pressure, Common Rail, Non VG

Download MaxxForce® 13 Brochure PDF

    

Maxxforce Engines for TranStar Trucks: View Liquid Dry Bulk Engines

International Trucks Maxxforce engines for TranStar liquid or dry bulk trucks are an industry standard. View different horsepower ranges here.

• Maxxforce Engines for TranStar Trucks
• Liquid Dry Bulk Engines
• Maxxforce Big Bore Engines for Beverage
• Big Bore Engines

Maxxforce Big Bore Engines for Beverage: View Big Bore Engines

Maxxforce Big Bore engines are perfect for the beverage TranStar trucks. Check out International Trucks 330-390 hp Maxxforce 11 Big Bore engines.

TranStar

MaxxForce 11

Engine

Tough, Reliable and Ready to Take on Anything

330-390 hp

1,250-1,450 lb.-ft. of torque

With a schedule to keep, you need the perfect combination of engine and truck-and that's where the International® TranStar® with MaxxForce® Big Bore engines deliver. Setting new standards in reliability, MaxxForce Big Bore engines utilize a high-pressure common-rail fuel system to offer higher fuel efficiency, with up to 475 HP in a lightweight package so you can haul more, more often. And with an engine validated by over 30,000 hours in the lab and over two million miles on the road, you can drive easy with the confidence your job demands.

• EPA compliant with MaxxForce Advanced EGR, the only no-hassle emissions solution for 2010 standards
• A Compacted Graphite Iron cylinder block is 40% stiffer with 75% higher tensile strength, and 200% greater fatigue resistance than iron used in other Class 8 diesel engines
• Low vibration levels prolong the life of the engine by protecting it from ordinary wear and tear
• Fuel system combined with twin series turbo chargers, delivers peak torque at a lower RPM, which allows for earlier upshifts when accelerating and fewer downshifts when climbing hills
• Internal testing has shown a 2.4% fuel efficiency advantage over the leading I5L engine
• Over 500lbs lighter than the nearest I5L engine with similar power output
• Peak torque is achieved at 1000 RPM (just over idle) and sustains at higher RPMs for a more responsive off-the-line driving experience

         

TranStar

MaxxForce 11

Spec

Engine Type

Diesel, 4-Cycle

Configuration

Inline 6-Cylinder

Displacement

10.5 L (641 cu. in.)

Bore & Stroke

4.72 in. & 6.10 in. (12 cm & 15.5 cm)

Compression Ratio

16.5:1

Aspiration

Dual Staged Turbochargers, Intercooler & Aftercooler

Combustion System

Direct Injection

Engine Lubrication

42 Quarts(40 L)

Total Engine Weight (Dry)

2,000 lbs. (1,089 kg)

Dimensions

L 59 in. x W 37 in. x H 49 in.

Valves

4 Valves per Cylinder, Overhead Cam Actuated

800 RPM Torque Range (lbs/ft)

660-830

Block

CGI

Emissions Technology

EGR-DPF

Fuel System

Bosch High Pressure, Common Rail, Non VG

Download MaxxForce® 11 Brochure PDF

         

TranStar Maxxforce Engines for Liquid of Dry Bulk: View Engines

Maxxforce 13 410-475 hp Big Bore engines were designed for the TranStar Truck. View liquid or dry bulk Maxxforce 13 engines here.

• TranStar Maxxforce Engines for Liquid of Dry Bulk
• Engines
• Maxxforce Big Bore 410-475 hp Engines
• Maxxforce 13 Engine

Maxxforce Big Bore 410-475 hp Engines: View The Maxxforce 13 Engine

International Trucks Maxxforce 13 Big Bore engine delivers 410-475 hp. View this technologically advanced engine perfect for beverage industry trucks.

TranStar

MaxxForce 13

Engine

Tough, Reliable and Ready to Take on Anything

410-475 hp

1,450-1,700 lb.-ft. of torque

Designed specifically for International brand heavy vehicles, with a combination of technologically advanced materials and components, MaxxForce® Big Bore engines deliver outstanding fuel economy, excellent power characteristics, an exceptionally smooth, quiet ride and high strength without the added weight. Navistar's MaxxForce Big Bore engines have revolutionized how the world looks at Class 8 commercial diesels.

• EPA compliant with MaxxForce Advanced EGR, the only no-hassle emissions solution for 2010 standards
• A Compacted Graphite Iron cylinder block is 40% stiffer with 75% higher tensile strength, and 200% greater fatigue resistance than iron used in other Class 8 diesel engines
• Low vibration levels prolong the life of the engine by protecting it from ordinary wear and tear
• Fuel system combined with twin series turbo chargers, delivers peak torque at a lower RPM, which allows for earlier upshifts when accelerating and fewer downshifts when climbing hills
• Internal testing has shown a 2.4% fuel efficiency advantage over the leading I5L engine
• Over 500lbs lighter than the nearest I5L engine with similar power output
• Peak torque is achieved at 1000 RPM (just over idle) and sustains at higher RPMs for a more responsive off-the-line driving experience

         

TranStar

MaxxForce 13

Spec

Engine Type

Diesel, 4-Cycle

Configuration

Inline 6-Cylinder

Displacement

12.4 L (758 cu. in.)

Bore & Stroke

4.96 in. & 6.54 in. (12.6 cm & 16.6 cm)

Compression Ratio

16.5:1

Aspiration

Dual Staged Turbochargers, Intercooler & Aftercooler

Combustion System

Direct Injection

Engine Lubrication

42 Quarts(40 L)

Total Engine Weight (Dry)

2,400 lbs. (1,089 kg)

Dimensions

L 59 in. x W 37 in. x H 49 in.

Valves

4 Valves per Cylinder, Overhead Cam Actuated

800 RPM Torque Range (lbs/ft)

830-960

Block

CGI

Emissions Technology

EGR-DPF

Fuel System

Bosch High Pressure, Common Rail, Non VG

Download MaxxForce® 13 Brochure PDF

             

215-300 HP Maxxforce DT Engine | View WorkStar Utility Engines

The Maxxforce DT is perfect for your Utility WorkStar 7 and 8 Trucks. Visit us here to check out our powerful 215-300 HP Maxxforce utility engines!

• 215-300 HP Maxxforce DT Engine
• View WorkStar Utility Engines
• WorkStar Waste Collection Engines
• View WorkStar Government Engines
• Maxxforce Engines for WorkStar Construction: View Engines
• Maxxforce Engines for WorkStar Emergency View Engines

220-300 HP Maxxforce DT Engine | View WorkStar Government Engines

The Maxxforce DT is perfect for your Government WorkStar 7 and 8 Trucks. Visit us here to check out our powerful 215-300 HP Maxxforce Government engines!

220-300 HP Maxxforce DT Engine: WorkStar Waste Collection Engines

The Maxxforce DT is perfect for your waste collection WorkStar 7 and 8 Trucks. Visit us here to check out our powerful 215-300 HP Maxxforce engines!

Maxxforce Engines for WorkStar Construction: View Engines

The Maxxforce 215-300 HP DT powers the WorkStar construction truck to its full potential. View Maxxforce Engines for WorkStar Construction trucks.

Maxxforce Engines for WorkStar Emergency: View Engines

The Maxxforce 215-300 HP DT powers the WorkStar emergency truck to its full potential. View Maxxforce Engines for WorkStar emergency trucks.

WorkStar

MaxxForce DT

Engine

Legendary Durability and Performance

215-300 hp

560-860 lb.-ft. of torque

The MaxxForce® DT powers the WorkStar® to its full potential. It has a full range of automatic and manual driveline options and thousands of possible build configurations to meet the demands of any heavy-duty application. Its reliability, durability, serviceability and high resale value mean the MaxxForce® DT brings real success to your operation.

• EPA compliant with MaxxForce Advanced EGR, the only no-hassle emissions solution for 2010 standards
• Electro-hydraulic Generation Two fuel system make it 9% more fuel-efficient than previous models
• Premium plateau-honed wet-sleeve design provides heavy-duty durability characteristics of big bore engines, plus easy rebuildability
• Mechanical roller followers allow 70,000 more miles before lash adjustments than the competition
• Four valves per cylinder provide better breathing, performance and lower emissions
• Named by Diesel Power magazine one of the "Top 10 Diesel Engines -Ever."

             

WorkStar

MaxxForce DT

Spec

Engine Type

Diesel, 4-Cycle

Configuration

Inline 6-Cylinder

Displacement

7.6 L (466 cu. in.)

Bore & Stroke

4.49 in. & 4.68 in. (11.7 cm & 11.9 cm)

Compression Ratio

16.4:1

Aspiration

< 230 hp Aftercooler only

Combustion System

Direct Injection

Engine Lubrication

30 Quarts(28 L)

Total Engine Weight (Dry)

1,425 lbs. (646 kg)

Dimensions

< 230 hp L 45 in. x W 42 in. x H 43 in.

Valves

4 Valves per Cylinder

Cylinder Design

Wet-Replacable, Induction/Hardened Cylinder Sleeves

Fuel System

Electro-Hydraulic Unit Injector G2

Download MaxxForce® DT Brochure PDF

      

300-330 HP Maxxforce 9 Engine | WorkStar Utility Engine Upgrades

With a full range of automatic and manual driveline options and thousands of potential build configurations, Maxxforce 9 is the perfect engine for your WorkStar.

• 300-330 HP Maxxforce 9 Engine
• WorkStar Utility Engine Upgrades
• WorkStar Government Engine Upgrades
• WorkStar Waste Collection Engine Upgrades
• International Trucks WorkStar Construction Engines, View Engines
• International Trucks WorkStar Emergency Engines, View Engines

220-300 HP Maxxforce DT Engine | View WorkStar Government Engines

With a full range of automatic and manual driveline options and thousands of potential build configurations, Maxxforce 9 is the perfect engine for your WorkStar.

300-330 HP Maxxforce 9 Engine | WorkStar Waste Collection Upgrades

With a full range of automatic and manual driveline options and thousands of potential build configurations, Maxxforce 9 is the perfect engine for your WorkStar.

International Trucks WorkStar Construction Engines: View Engines

Maxxforce 300-330 HP 9 engines are purpose-built to the needs of WorkStar drivers. View Maxxforce Engines for WorkStar Construction trucks.

International Trucks WorkStar Emergency Engines: View Engines

Maxxforce 300-330 HP 9 engines are purpose-built to the needs of WorkStar drivers. View Maxxforce Engines for WorkStar Emergency trucks.

WorkStar

MaxxForce 9

Engine

Rock Solid for the Toughest Jobs

300-330 hp

860-950 lb.-ft. of torque

MaxxForce® 9 engines are purpose-built to the needs of WorkStar® drivers. With a full range of automatic and manual driveline options and thousands of potential build configurations, MaxxForce 9 is made to serve the broadest range of on-highway applications. Navistar engineers have carried forward the proven technologies and components of a time-tested platform like premium plateau-honed cylinder design, reinforced bearing-cap ladder and rugged single-box ECM.

• EPA compliant with MaxxForce Advanced EGR, the only no-hassle emissions solution for 2010 standards
• Premium plateau-honed wet-sleeve design provides heavy-duty durability characteristics of big bore engines
• A new regulated two-stage turbocharger and upgraded cooling system provide outstanding boost and response for every application
• The electro-hydraulic high-pressure fuel system features new high-efficiency injector nozzles and advanced electronic control strategies for fuel economy gains
• Increased 9.3-liter displacement by longer stroke, meet the requirements of mroe demanding applications

             

WorkStar

MaxxForce 9

Spec

Engine Type

Diesel, 4-Cycle

Configuration

Inline 6-Cylinder

Displacement

9.3 L (570 cu. in.)

Bore & Stroke

4.59 in. & 5.75 in. (11.7 cm & 14.6 cm)

Compression Ratio

17.2:1

Aspiration

Two-Stage Turbochargers, Intercooler & Aftercooler

Combustion System

Direct Injection

Engine Lubrication

30 Quarts(28 L)

Total Engine Weight (Dry)

1,425 lbs. (646 kg)

Dimensions

L 45 in. x W 42 in. x H 47 in.

Valves

4 Valves per Cylinder

Cylinder Design

Wet-Replacable, Induction/Hardened Cylinder Sleeves

Fuel System

Electro-Hydraulic Unit Injector G2

Download MaxxForce® 9 Brochure PDF

      

310-350 HP Maxxforce 10 Engine | View WorkStar Utility Engines

With a full range of automatic and manual driveline options and thousands of potential build configurations, Maxxforce 10 is the perfect WorkStar utility engine.

• 310-350 HP Maxxforce 10 Engine
• WorkStar Utility Engines
• WorkStar Government Engines
• WorkStar Waste Collection Engines
• Maxxforce 10 Engines for WorkStar
• Construction Engines

310-350 HP Maxxforce 10 Engine | View WorkStar Government Engines

With a full range of automatic and manual driveline options and thousands of potential build configurations, check out is the perfect WorkStar Government engine.

310-350 HP Maxxforce 10 Engine: WorkStar Waste Collection Engines

With a full range of automatic and manual driveline options and thousands of potential build configurations, check out is the perfect waste collection engine.

Maxxforce 10 Engines for WorkStar: View Construction Engines

Maxxforce 310-350 HP 10 engines are purpose-built to the needs of WorkStar drivers. View Maxxforce Engines for WorkStar Construction trucks.

WorkStar

MaxxForce 10

Engine

Strength and Power to Get the Job Done

310-350 hp

1,050-1,150 lb.-ft. of torque

MaxxForce® 10 engines are purpose-built to the needs of WorkStar® drivers. With a full range of automatic and manual driveline options and thousands of potential build configurations, MaxxForce 10 is made to serve the broadest range of on-highway applications. Navistar engineers have carried forward the proven technologies and components of a time-tested platform like premium plateau-honed cylinder design, reinforced bearing-cap ladder and rugged single-box ECM.

• EPA compliant with MaxxForce Advanced EGR, the only no-hassle emissions solution for 2010 standards
• Premium plateau-honed wet-sleeve design provides heavy-duty durability characteristics of big bore engines
• A new regulated two-stage turbocharger and upgraded cooling system provide outstanding boost and response for every application
• The electro-hydraulic high-pressure fuel system features new high-efficiency injector nozzles and advanced electronic control strategies for fuel economy gains

             

WorkStar

MaxxForce 10

Spec

Engine Type

Diesel, 4-Cycle

Configuration

Inline 6-Cylinder

Displacement

9.3 L (570 cu. in.)

Bore & Stroke

4.59 in. & 5.75 in. (11.7 cm & 14.6 cm)

Compression Ratio

17.2:1

Aspiration

Two-Stage Turbochargers, Intercooler & Aftercooler

Combustion System

Direct Injection

Engine Lubrication

30 Quarts(28 L)

Total Engine Weight (Dry)

1,425 lbs. (646 kg)

Dimensions

L 45 in. x W 42 in. x H 47 in.

Valves

4 Valves per Cylinder

Cylinder Design

Wet-Replacable, Induction/Hardened Cylinder Sleeves

Fuel System

Electro-Hydraulic Unit Injector G2

Download MaxxForce® 10 Brochure PDF

      

330-390 HP Maxxforce Big Bore Engine | WorkStar Engine Upgrade

With a 1.2 million-mile B-50 life, the longest design life in the industry, the Maxxforce Big Bore is your best choice for your WorkStar utility truck.

• 330-390 HP Maxxforce Big Bore Engine
• WorkStar Engine Upgrade
• WorkStar Government Engine
• WorkStar Waste Collection Engine
• Maxxforce 11 Engines for WorkStar
• Construction Engines
• Maxxforce 10 Engines for WorkStar
• Emergency Engines

330-390 HP Maxxforce Big Bore Engine | WorkStar Government Engine

With a 1.2 million-mile B-50 life, the longest design life in the industry, the Maxxforce Big Bore is your best choice for your WorkStar Government truck.

330-390 HP Maxxforce Big Bore Engine | Waste Collection Engine

With a 1.2 million-mile B-50 life, the longest design life in the industry, the Maxxforce Big Bore is your best choice for your WorkStar waste collection truck.

Maxxforce 11 Engines for WorkStar: View Construction Engines

Maxxforce 11 330-390 HP engines are designed to outlast all other engines. View Maxxforce Engines for WorkStar Construction trucks.

Maxxforce 10 Engines for WorkStar: View Emergency Engines

Maxxforce 310-350 HP 10 engines are purpose-built to the needs of WorkStar drivers. View Maxxforce Engines for WorkStar Emergency trucks.

WorkStar

MaxxForce 11

Engine

Tough, Reliable and Ready to Take on Anything

330-390 hp

1,250-1,450 lb.-ft. of torque

To succeed in this competitive business, your truck needs an engine behind it that's always performing and working for you. MaxxForce® Big Bore engines keep you going strong. With a 1.2 million-mile B-50 life, the longest design life in the industry, means it's built to last 200,000 miles longer than the competition - No matter the pounding it takes:

• EPA compliant with MaxxForce Advanced EGR, the only no-hassle emissions solution for 2010 standards
• A Compacted Graphite Iron cylinder block is 40% stiffer with 75% higher tensile strength, and 200% greater fatigue resistance than iron used in other Class 8 diesel engines
• Low vibration levels prolong the life of the engine by protecting it from ordinary wear and tear
• Fuel system combined with twin series turbo chargers, delivers peak torque at a lower RPM, which allows for earlier upshifts when accelerating and fewer downshifts when climbing hills
• Internal testing has shown a 2.4% fuel efficiency advantage over the leading I5L engine
• Over 500lbs lighter than the nearest I5L engine with similar power output
• Peak torque is achieved at 1000 RPM (just over idle) and sustains at higher RPMs for a more responsive off-the-line driving experience

             

WorkStar

MaxxForce 11

Spec

Engine Type

Diesel, 4-Cycle

Configuration

Inline 6-Cylinder

Displacement

10.5 L (641 cu. in.)

Bore & Stroke

4.72 in. & 6.10 in. (12 cm & 15.5 cm)

Compression Ratio

16.5:1

Aspiration

Dual Staged Turbochargers, Intercooler & Aftercooler

Combustion System

Direct Injection

Engine Lubrication

42 Quarts(40 L)

Total Engine Weight (Dry)

2,000 lbs. (1,089 kg)

Dimensions

L 59 in. x W 37 in. x H 49 in.

Valves

4 Valves per Cylinder, Overhead Cam Actuated

800 RPM Torque Range (lbs/ft)

660-830

Block

CGI

Emissions Technology

EGR-DPF

Fuel System

Bosch High Pressure, Common Rail, Non VG

Download MaxxForce® 11 Brochure PDF

             

410-475 HP Maxxforce Big Bore Engine | WorkStar Upgrade Engines

Designed specifically for International brand heavy vehicles, Maxxforce Big Bore engines deliver outstanding fuel economy and excellent power characteristics.

• 410-475 HP Maxxforce Big Bore Engine
• WorkStar Upgrade Engines
• WorkStar Government Upgrade
• WorkStar Waste Collection Upgrade
• Maxxforce 13 Engines for WorkStar
• Construction Engines
• Emergency Engines

410-475 HP Maxxforce Big Bore Engine | WorkStar Government Upgrade

Designed specifically for International brand heavy vehicles, Maxxforce Big Bore engines deliver outstanding fuel economy and excellent power characteristics.

410-475 HP Maxxforce Big Bore Engine | Waste Collection Upgrade

Designed specifically for International brand heavy vehicles, Maxxforce Big Bore engines deliver outstanding fuel economy and excellent power characteristics.

Maxxforce 13 Engines for WorkStar: View Construction Engines

Maxxforce 13 410-475 HP engines are designed to delivery power and fuel efficiency. View Maxxforce Engines for WorkStar Construction trucks.

Maxxforce 13 Engines for WorkStar: View Emergency Engines

Maxxforce 13 410-475 HP engines are designed to delivery power and fuel efficiency. View Maxxforce Engines for WorkStar Emergency trucks.

WorkStar

MaxxForce 13

Engine

Tough, Reliable and Ready to Take on Anything

410-475 hp

1,450-1,700 lb.-ft. of torque

Designed specifically for International brand heavy vehicles, with a combination of technologically advanced materials and components, MaxxForce® Big Bore engines deliver outstanding fuel economy, excellent power characteristics, an exceptionally smooth, quiet ride and high strength without the added weight. Navistar's MaxxForce Big Bore engines have revolutionized how the world looks at Class 8 commercial diesels.

• EPA compliant with MaxxForce Advanced EGR, the only no-hassle emissions solution for 2010 standards
• A Compacted Graphite Iron cylinder block is 40% stiffer with 75% higher tensile strength, and 200% greater fatigue resistance than iron used in other Class 8 diesel engines
• Low vibration levels prolong the life of the engine by protecting it from ordinary wear and tear
• Fuel system combined with twin series turbo chargers, delivers peak torque at a lower RPM, which allows for earlier upshifts when accelerating and fewer downshifts when climbing hills
• Internal testing has shown a 2.4% fuel efficiency advantage over the leading I5L engine
• Over 500lbs lighter than the nearest I5L engine with similar power output
• Peak torque is achieved at 1000 RPM (just over idle) and sustains at higher RPMs for a more responsive off-the-line driving experience

             

WorkStar

MaxxForce 13

Spec

Engine Type

Diesel, 4-Cycle

Configuration

Inline 6-Cylinder

Displacement

12.4 L (758 cu. in.)

Bore & Stroke

4.96 in. & 6.54 in. (12.6 cm & 16.6 cm)

Compression Ratio

16.5:1

Aspiration

Dual Staged Turbochargers, Intercooler & Aftercooler

Combustion System

Direct Injection

Engine Lubrication

42 Quarts(40 L)

Total Engine Weight (Dry)

2,400 lbs. (1,089 kg)

Dimensions

L 59 in. x W 37 in. x H 49 in.

Valves

4 Valves per Cylinder, Overhead Cam Actuated

800 RPM Torque Range (lbs/ft)

830-960

Block

CGI

Emissions Technology

EGR-DPF

Fuel System

Bosch High Pressure, Common Rail, Non VG

Download MaxxForce® 13 Brochure PDF