Introduction
Challenger MT445 Utility Tractor
The Challenger MT445 is a utility tractor produced between 2002 and 2004 in England. Designed for agricultural operations, it shares structural similarities with the Massey Ferguson 4233 and 4335 models.
Engine and Performance
The tractor is powered by a liquid-cooled, 4-cylinder Perkins 3054B diesel engine with a displacement of 4.2 liters (258 cubic inches). It features a 17.3:1 compression ratio and operates at a rated speed of 2200 RPM. The engine incorporates a thermostart pre-heating system and a dual paper element air cleaner to ensure reliable cold starts and efficient combustion.
Transmission and Drive
The MT445 offers three transmission configurations to suit various operational requirements: a 24-speed power shuttle, a 12-speed syncromesh, or a 12-speed mechanical shuttle. All configurations utilize a wet disc clutch for durability. The tractor is available in either two-wheel or four-wheel drive variants, supported by power steering and hydraulic wet disc brakes for controlled operation.
Hydraulics and Hitch
The hydraulic system is of the open-center type, delivering a total flow of 25 gpm (94.6 lpm), with an SCV flow of 10 gpm (37.9 lpm) at a pressure of 3046 psi (210.0 bar). The rear hitch is a Category II type equipped with electronic draft control. It provides a standard lift capacity of 4100 lbs (1859 kg) at 24 inches, with an optional configuration capable of reaching 6200 lbs (2812 kg).
Dimensions and Operator Environment
The machine features a wheelbase of 93 inches (236 cm) and a width of 77 inches (195 cm). Standard tire equipment includes 12.4R24 front tires and 13.6R38 rear tires. Operator safety is provided by a two-post folding ROPS, with an optional climate-controlled cab available for improved working conditions.
Conclusion
With its 72-horsepower engine and versatile transmission options, the Challenger MT445 serves as a capable utility tractor for standard agricultural tasks, combining structural durability with flexible hydraulic and lifting capabilities.
Production Information of Challenger, MT445
- The Challenger MT445 is similar to the Massey Ferguson 4233 and 4335.
- Utility tractor
- Built in England
| Manufacturer | Challenger (a part of AGCO) |
|---|
Dimension and Tires Information of Challenger, MT445
| Wheelbase | 93 inches [236 cm] |
|---|---|
| Height (Folded ROPS) | 78 inches [198 cm] |
| Height (ROPS) | 103 inches [261 cm] |
| Length | 163 inches [414 cm] |
| Height (cab) | 100 inches [254 cm] |
| Width | 77 inches [195 cm] |
| Ag front | 12.4R24 |
|---|---|
| Ag rear | 13.6R38 |
Engine Specifications of Challenger, MT445
- Perkins 3054B
- Liquid-cooled
- Diesel
- 4-cylinder
| Starter volts | 12 |
|---|---|
| Displacement | 258 ci [4.2 L] |
| Pre-heating | Thermostart |
| Bore/Stroke | 4.055x5.00 inches [103 x 127 mm] |
| Rated RPM | 2200 |
| Compression | 17.3:1 |
| Air cleaner | Dual paper elements |
Transmission Information of Challenger, MT445
Transmission variants 1
| Type | Power shuttle |
|---|---|
| Gears | 24 forward and reverse |
| Clutch | Wet disc |
Transmission variants 2
| Type | Syncromesh |
|---|---|
| Gears | 12 forward and 4 reverse |
Transmission variants 3
| Type | Mechanical shuttle |
|---|---|
| Gears | 12 forward and reverse |
- 24-speed power shuttle
- 12-speed syncromesh
- 12-speed mechanical shuttle
Mechanical Specs of Challenger, MT445
- Two- or four-wheel drive
- Two-post folding ROPS. Cab available with air-conditioning.
- Power steering
- Hydraulic wet disc brakes
Power Information of Challenger, MT445
| Rear PTO | Independent |
|---|---|
| Rear PTO Type | 540/1000 |
Hydraulics Specifications of Challenger, MT445
| Type | Open center |
|---|---|
| Total flow | 25 gpm [94.6 lpm] |
| SCV flow | 10 gpm [37.9 lpm] |
| Pressure | 3046 psi [210.0 bar] |
| Valves | 2 to 4 |
Three-Point Hitch of Challenger, MT445
| Rear Type | II |
|---|---|
| Rear Type(optional) | 6200 lbs [2812 kg] |
| Control | Electronic draft control |
| Rear lift (at 24"/610mm) | 4100 lbs [1859 kg] |
Electrical System of Challenger, MT445
| Ground | Negative |
|---|---|
| Charging system | Alternator |
| Battery volts | 12 |
Where it sits
With 72 hp[P] HP, the Challenger MT445 sits between MT425 (61 HP) and MT455 (83 HP) in Challenger's range. Its power puts it in the 47th percentile of 2000s models in our database (2822 machines).
Frequently asked questions
How much horsepower does the Challenger MT445 have?
The Challenger MT445 delivers 72 hp[P] HP.
What years was the Challenger MT445 produced?
The Challenger MT445 was produced in 2002-2004.
What engine does the Challenger MT445 have?
The Challenger MT445 is powered by a Diesel, 4-cylinder engine.
What transmission does the Challenger MT445 use?
The Challenger MT445 uses a Power shuttle transmission.
Is the Challenger MT445 4WD?
The Challenger MT445 is available in 2WD/4WD.