Challenger MT445B Technical specs


Make Challenger
Model MT445B
Company country United states
Production years From 2004  Until 2013
Tractor type Utility tractor
Fuel diesel
Price -
Total build -
Service repair manual Challenger MT445B Manual
AG front tires 10.00-16 (2WD)
AG rear tires 480/70R38
Weight 8,840 lbs or 4009 kg
Length -
Width -
Height -
Wheelbase 97 inches [246 cm]
Ground clearance -
Engine size 268 ci or 4.4 L
Number of cylinders 4 cylinders
Horsepower 85 hp or 63.4 kW
Power RPM 2200 (rpm)
Engine torque -
Engine torque RPM -
Fuel type diesel
Fuel tank capacity 40 gal or 151.4 L
Compression ratio 17.5:1
Bore stroke 4.134x5.00 inches or (105 x 127 mm)
Number of batteries -
Battery voltage 12 V
Electric ground force negative
Engine starter volts 12 V
Parts And Accessories Challenger MT445B Parts
Transmission system Autopower IV
Transmission type four speed power shift
Transmission gears 16 forward and reverse
Clutch system wet disc
Wheel drive 4x2 2WD
Final drive system inboard planetary
Steering system hydrostatic power
Braking system hydraulic wet disc
Cabin type ROPS
Differentiel lock electro-hydraulic
Number of valves 2 to 4
Pump flow rate 26.4 gpm or 99.9 lpm
Hydraulic pressure 2900 psi or 200.0 bar
Drawbar real power 60.5 hp or 45.1 kW
Drawbar fuel consumption 4.9 gal/hour or 18.5 l/hour
Max drawbar pull 8680 lbs or 3937 kg
PTO claimed power 70 hp or 52.2 kW
PTO real power 73.4 hp or 54.7 kW
PTO clutch system electro-hydraulic wet disc
Rear PTO system independent
Rear PTO RPM 540 (rpm)
Front PTO system -
PTO fuel consumption 4.8 gal/hour or 18.2 l/hour
Hitch control system electronic top-link draft control
Rear hitch II
Rear hitch lift 7285 lbs or 3304 kg



Detailed review of Challenger MT445B

Challenger produced its MT445B farm tractor model From 2004  Until 2013 in United states with a ROPS cabin.
Talking dimensions and weight, this model weighs 8,840 lbs or 4009 kg while maintaining a wheelbase of 97 inches [246 cm].
This tractor can fit ag tires of 10.00-16 (2WD) front and 10.00-16 (2WD) back .
This Challenger MT445B is powerd by a diesel engine it has 268 ci or 4.4 L 4 cylinders ,it can produce 85 hp or 63.4 kW at 2200 (rpm), the fuel tank capacity is 40 gal or 151.4 L.
This machine has 4x2 2WD wheel drive system,16 forward and reverse Autopower IV transmission system.

- Challenger provided us with the latest version of its MT445B service repair manual
- Find All mechanical and electrical parts and accessories of Challenger MT445B farm-tractor here