Challenger MT445 Specs ( 2002-2004 )
Overview
The Challenger MT445 is a utility farm tractor manufactured in England by AGCO between 2002 and 2004, sharing design similarities with Massey Ferguson 4233 and 4335 models. It is powered by a Perkins 4.2L 4-cylinder diesel engine and was available in both 2WD and 4WD configurations with either a cab or a two-post folding ROPS. Performance testing recorded 69.7 hp at the PTO and a maximum drawbar pull of 6970 lbs.
Ideal Applications
Tested Performance Data:
OECD testing of the MT445 recorded 69.7 hp at the PTO at rated engine speed and a maximum drawbar power of 60.2 hp while consuming 4.3 gallons of fuel per hour.
Transmission and Drive Layout:
The mechanical system supports 12-speed or 24-speed configurations across syncromesh, mechanical shuttle, or power shuttle types, paired with a wet disc clutch.
Hydraulic and Lift Specifications:
Equipped with an open center hydraulic system providing 25 gpm of total flow at 3046 psi, the tractor features a Type II rear hitch with a lift capacity of 4100 lbs.
Production
| Description | Utility tractor / Built in England / The Challenger MT445 is similar to the Massey Ferguson 4233 and 4335. |
|---|---|
| Manufacturer | Challenger (a part of AGCO) |
Engine
| Cab Fuel tank | 34 gal (128.7 L) |
|---|---|
| Engine type | Perkins 4.2L 4-cyl diesel |
| ROPS Fuel tank | 29.1 gal (110.1 L) |
| Air cleaner | dual paper elements |
| Bore/Stroke | 4.055x5.00 inches (103 x 127 mm) |
| Compression | 17.3:1 |
| Description | Perkins 3054B / diesel / 4-cylinder / liquid-cooled |
| Displacement | 258 ci (4.2 L) |
| Pre-heating | thermostart |
| Rated RPM | 2200 |
| Starter volts | 12 |
| Drawbar (tested) | 60.2 hp (44.9 kW) |
| PTO (claimed) | 65 hp (48.5 kW) |
| PTO (tested) | 69.7 hp (52.0 kW) |
Transmission
| Clutch | wet disc |
|---|---|
| Gears | 24 forward and reverse / 12 forward and 4 reverse / 12 forward and reverse |
| Type | power shuttle / syncromesh / mechanical shuttle |
| Transmission type | 24-speed power shuttle / 12-speed syncromesh / 12-speed mechanical shuttle |
| Transmission type | 24-speed power shuttle / 12-speed syncromesh / 12-speed mechanical shuttle |
Mechanical
| Cab | Two-post folding ROPS. Cab available with air-conditioning. |
|---|---|
| Description | Power steering / Hydraulic wet disc brakes |
| Drive type | Two- or four-wheel drive |
Hydraulics
| Pressure | 3046 psi (210.0 bar) |
|---|---|
| SCV flow | 10 gpm (37.9 lpm) |
| Total flow | 25 gpm (94.6 lpm) |
| Type | open center |
| Valves | 2 to 4 |
Hitch
| Control | electronic draft control |
|---|---|
| Rear lift (at 24"/610mm) | 4100 lbs (1859 kg) |
| Rear Type | II |
PTO
| Rear PTO | independent |
|---|---|
| Rear PTO Type | 540/1000 |
Electrical
| Battery volts | 12 |
|---|---|
| Charging system | alternator |
| Ground | negative |
Dimensions & Tires
| Ag front | 12.4R24 |
|---|---|
| Ag rear | 13.6R38 |
| Height (cab) | 100 inches (254 cm) |
| Height (Folded ROPS) | 78 inches (198 cm) |
| Height (ROPS) | 103 inches (261 cm) |
| Length | 163 inches (414 cm) |
| Wheelbase | 93 inches (236 cm) |
| Width | 77 inches (195 cm) |
| Front tire | 12.4R24 |
| Rear tire | 13.6R38 |
| Weight | 6211 to 8170 pounds |
| Wheelbase | 93 inches (236 cm) |
Challenger MT445 Weight
| 2WD Cab | 7619 lbs (3455 kg) |
|---|---|
| 2WD ROPS | 6211 lbs (2817 kg) |
| 4WD Cab | 8170 lbs (3705 kg) |
| 4WD ROPS | 6546 lbs (2969 kg) |
OCED Tractor Test 1950
| Description | Diesel 12-speed 4WDOctober 2000 - December 2000, Link: OCED Tractor Test 1950 file / PTO performance / Drawbar performance / Gear 3M used for power test. / Gear 2L used for pull test. |
|---|---|
| Fuel use | 4.3 gal/hour (16.3 l/hour) / 4.0 gal/hour (15.1 l/hour) / 4.3 gal/hour (16.3 l/hour) |
| Max power | 60.2 hp (44.9 kW) |
| Max pull | 6970 lbs (3161 kg) |
| Power at rated engine speed | 69.7 hp (52.0 kW) |
| Power at rated PTO speed | 68 hp (50.7 kW) |
References
| Description | MT400 - Serious Machinery to take on any challenge published in 2002, by AGCO |
|---|
Nebraska Tractor Test Results
Test #S360A
Test Date:
October to December 2000
Location:
N/A
This section is compiled from original Nebraska Tractor Test PDFs using AI-assisted extraction and human review. For full verification, download the source PDF above. Differences between reports, incomplete source data, and occasional extraction or data entry mistakes can occur.
No PTO performance data available.