Utility tractorsSpec sheet
Challenger MT445B
The Challenger MT445B is a utility tractor built for farmers who need a strong and reliable machine. It has a 2WD drive system and a 4x2 chassis, making it good for many farm tasks. The tractor is powered by a Perkins Diesel engine with 4 cylinders and 85 horsepower. This engine is turbocharged and liquid-cooled, which helps it work well in different conditions. The MT445B has a transmission with 16 forward and 16 reverse gears, giving the driver lots of options for different jobs. It uses hydrostatic power steering, making it easy to control. The tractor weighs 8,630 pounds, which is above average for its class. It has wet disc brakes and an open center hydraulic system. The three-point hitch is category II, good for attaching various tools. The tractor also has options for different tire sizes, depending on what the farmer needs.
ManufacturerChallengerPower85 hp(63.4 kW)Class60–100 HP tractors →Engine4-cylinderTransmissionFour Speed Power Shift
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Key specifications
- Category
- Utility
- Engine power
- 85hp
- Operating weight
- 8,630 lb
- Transmission
- Four Speed Power Shift
Category comparison
MT445B compared with its category
vs. Utility medianDistribution
Engine Power (hp)
All recorded Utility tractors
85 hp · 75th
This model
9
Median 55 hp
177
This modelUtility tractorsMediann = 5,383
The MT445B ranks at the 75th percentile for engine power among recorded utility tractors.
Overview
About the Challenger MT445B
The Challenger MT445B is a utility tractor built for farmers who need a strong and reliable machine. It has a 2WD drive system and a 4x2 chassis, making it good for many farm tasks. The tractor is powered by a Perkins Diesel engine with 4 cylinders and 85 horsepower. This engine is turbocharged and liquid-cooled, which helps it work well in different conditions. The MT445B has a transmission with 16 forward and 16 reverse gears, giving the driver lots of options for different jobs. It uses hydrostatic power steering, making it easy to control. The tractor weighs 8,630 pounds, which is above average for its class. It has wet disc brakes and an open center hydraulic system. The three-point hitch is category II, good for attaching various tools. The tractor also has options for different tire sizes, depending on what the farmer needs.
Full specifications
Recorded specifications
General
| Manufacturer | Challenger |
|---|---|
| Model | MT445B |
| Category | Utility tractor |
| Type | 4x2 |
| Operating weight | 8,630lb(3,914 kg) |
Engine
| Make | Perkins Diesel |
|---|---|
| Model | 1104C |
| Power | 85hp(63.38 kW) |
| Cylinders | 4 |
| Displacement | 268ci(4.39 L) |
| Bore | 4.13in(105 mm) |
| Stroke | 5in(127 mm) |
Transmission
| Type | Four Speed Power Shift |
|---|---|
| Forward gears | 16 |
| Reverse gears | 16 |
Chassis & drive
| Chassis | 4x2 |
|---|---|
| Drive | 2WD |
| Steering | Hydrostatic Power |
| Brakes | Wet Disc |
Hydraulics
| Type | Open Center |
|---|
Dimensions
| Operating weight | 8,630lb(3,914 kg) |
|---|
Closest alternatives
MT445B compared with the nearest models by horsepower
The closest utility models to the Challenger MT445B by rated horsepower are the John Deere 5085E (2015-2017) and the John Deere 5085E (2013-2014). The John Deere 5085E (2015-2017) matches it on rated power and weighs 1,360 lb less, carrying 86 lb per horsepower against 102 lb. The John Deere 5085E (2013-2014) matches it on rated power and weighs 690 lb less, so it is lighter for its power, which favors PTO and transport work over heavy draft. Of the 3 models, the MT445B has the highest weight per horsepower at 102 lb per hp.
| Spec | Challenger MT445B | John Deere 5085E (2015-2017) | John Deere 5085E (2013-2014) |
|---|---|---|---|
| Engine power | 85 hp63.4 kW | 85 hp63.4 kW | 85 hp63.4 kW |
| Operating weight | 8,630 lb3,914 kg | 7,275 lb3,300 kg | 7,937 lb3,600 kg |
| Weight per hp | 102 lb/hp62 kg/kW | 86 lb/hp52 kg/kW | 93 lb/hp57 kg/kW |
| Displacement | 268 ci4.39 L | 276 ci4.52 L | 276 ci4.52 L |
| Cylinders | 4 | 4 | 4 |
| Transmission | Four Speed Power Shift | Partially synchronized | Partially synchronized with wet disc clutch |
| Drive | 2WD | 4WD | 4WD |
| Years built | - | 2015-2017 | 2013-2014 |
Calculators
Calculators for the MT445B
PTO power
About 71 to 77 PTO hp
Estimated from the 85 hp engine rating. The calculator also estimates drawbar power by surface.
Implement sizing
Implements a 85 hp tractor can run
Maximum size is about a 10 ft rotary cutter or a 8.5 ft tiller. The calculator also sizes discs, plows and balers.
Ballast
118 lb per PTO hp as listed
Heavy draft work calls for 130 to 150 lb/hp. The calculator gives the ballast to add.
Units
85 hp is 63.4 kW
The converter gives kW and metric PS values, as used on European spec sheets.
Category medians
MT445B vs. Utility median
Challenger MT445B compared with other Utility tractors
| Spec | This model | Utility median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 85 hp | 55 hp | +55% | 75th |
| Engine Displacement | 268 ci | 183 ci | +46% | 75th |
| Cylinders | 4 | 4 | at median | 50th |
| Forward Gears | 16 | 12 | +33% | 73rd |
| Operating Weight | 8,630 lb | 5,303 lb | +63% | 80th |
Medians and percentiles are calculated from the utility tractors in the database that have a recorded value for each specification (sample size 4,941–5,720 models).
Same manufacturer
Other Challenger models
Other manufacturers
Models with similar horsepower
FAQ
Frequently asked questions
What is the engine power output of the Challenger MT445B?
Rated engine output for the Challenger MT445B is 85 hp, delivered by a 4-cylinder engine. The engine displaces 268 ci.
What hydraulics does the Challenger MT445B have?
The Challenger MT445B uses an Open Center hydraulic system.
What three-point hitch category does the Challenger MT445B use?
The Challenger MT445B has a Category II three-point hitch.
What is the operating weight of the Challenger MT445B?
The Challenger MT445B has an operating weight of about 8,630 lb.
Which transmission does the Challenger MT445B use?
The Challenger MT445B is equipped with a Four Speed Power Shift transmission with 16 forward gears.
How do I maintain a Challenger MT445B?
Routine service for the Challenger MT445B covers engine oil and filter changes, hydraulic and coolant level checks, air filter cleaning, and scheduled inspections. Refer to the manufacturer's maintenance schedule for exact intervals.