Challenger MT645B

Last Updated: September 2024

Overview

The Challenger MT645B is a powerful tractor built for serious farm work. It has a strong Sisu 74ETA engine with 6 cylinders and 235 horsepower. This engine is turbocharged and diesel-powered, giving it lots of muscle for tough jobs. The tractor uses a special transmission called a CVT, which means it can change speeds smoothly without shifting gears.

This tractor is big and sturdy, measuring 206 inches long, 118 inches wide, and 123.6 inches tall. It weighs a hefty 19,595 pounds, which helps it stay stable during heavy work. The MT645B has large agricultural tires, with bigger ones in the back for better traction. It also has a three-point hitch in the rear, which lets it connect to many different farm tools. The hydraulic system is designed to work efficiently, helping the tractor perform various tasks with ease.
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Key Specifications

Power Output: 235 hp (175.2 kW)

Transmission: continuously variable transmission (CVT)

Operating Weight: 19595 lb (8888 kg)

Fuel Type: Diesel

Challenger MT645B vs. Similar Tractors

Power Output

The Power Output for the Challenger MT645B is Excellent. It is greater than 92% of similar Utility tractors in our database.

Horsepower distribution of Utility tractors

(across 6.6K+ tractors in our database)

Operating Weight

The Operating Weight for the Challenger MT645B is Excellent. It is greater than 91% of similar Utility tractors in our database.

Operating weight distribution of Utility tractors

(across 6.4K+ tractors in our database)

Engine Displacement

The Engine Displacement for the Challenger MT645B is Above Average. It is greater than 88% of similar Utility tractors in our database.

Engine displacement distribution of Utility tractors

(across 1K+ tractors in our database)

Engine Rated RPM

The Engine Rated RPM for the Challenger MT645B is Average. It is greater than 34% of similar Utility tractors in our database.

Engine rated RPM distribution of Utility tractors

(across 1K+ tractors in our database)

Technical Specifications

Engine

Manufacturer
Sisu
Model
74ETA
Cooling Type
Liquid-cooled
Cylinder Orientation
Vertical Inline
Fuel Type
Diesel
Induction Type
Turbocharged
Cylinders
6
Displacement
449 ci (7.4 L)
Bore
4.25 in (108.0 mm)
Stroke
5.28 in (134.1 mm)
Rated RPM
2200
Power Output
235 hp (175.2 kW)

Transmission

Type
continuously variable transmission (CVT)
Forward Gears
infinite
Reverse Gears
infinite

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