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Tractor · 2004Unverified

Challenger MT445B

Name: Challenger MT445B
Brand: Challenger

Challenger MT445B — Model year 2004-20072008-2013 · 71 hp. Reference specifications; pending source verification.

The Challenger MT445B is a tractor model with a rated power of 71 hp, falling within the mid-range of its class. The MT445B was manufactured from 2004 to 2013. It is equipped with a 4-cylinder turbocharged diesel liquid-cooled engine, matched to a hydrostatic transmission and four-wheel drive system. The tractor's operating weight ranges from 8840 to 9445 pounds, and it is suitable for operations covering up to 200 acres.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power

71 hp

Max power

56.6 kW

Weight

8840 to 9445 pounds

Catalogue coverage

Variants represented

Richest spec table

108 rows

Recorded power

71 hp

Recorded weight

4009 kg

Transmissions

16-speed four speed power shift

Production years

2004-2013

Verified variants

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

Hover a source tag to verify

Overview

ManufacturerChallenger (a part of AGCO)Reference

Utility tractorReference

Built in Beauvais, FranceReference

The Challenger MT445B is similar to the Massey Ferguson 5445.Reference

Two- or four-wheel driveReference

Final drivesinboard planetaryReference

Differential lockelectro-hydraulicReference

Steeringhydrostatic powerReference

Hydraulic wet disc brakesReference

ROPS. Cab optional with air-conditioning.Reference

Engine

Caterpillar 4.4L 4-cyl dieselReference

Fuel tank151.4 LReference

Engine63.4 kWReference

Drawbar (tested)45.1 kWReference

Caterpillar 3054TReference

turbocharged dieselReference

4-cylinderReference

liquid-cooled verticalReference

This engine was alternative branded as a Perkins 1104C depending on market.Reference

Displacement4.4 LReference

Bore/Stroke105 x 127 mmReference

EmissionsTier 2Reference

Power63.4 kWReference

Air cleanerdual paper elementsReference

Compression17.5:1Reference

Rated RPM2200Reference

Starter volts12Reference

Max power56.6 kWReference

Power at rated engine speed52.7 kWReference

Max power45.1 kWReference

Fuel TypedieselReference

No of Cylinders4 CylinderReference

Rated engine speed2,200 RPMReference

Emissions complianceTier IIIReference

Bore and stroke4.134x5.00 inchesReference

Cooling systemliquid-cooledReference

Transmission

16-speed four speed power shiftReference

TransmissionAutopower IVReference

Typefour speed power shiftReference

Gears16 forward and reverseReference

Clutchwet discReference

Four power shift gears in four ranges.Reference

Transmission TypePowershiftReference

forward and reverse optionsAutoPower IV : 16 F and 16 RReference

Wheel Drive4WDReference

Rear Axle Drive Typeinboard planetaryReference

PTO & Hydraulics

PTO (claimed)52.2 kWReference

PTO (tested)56.6 kWReference

ROPS Typeopen centerReference

Cab Typeclosed center load sensingReference

Pressure200.0 barReference

Valves2 to 4Reference

Pump flow99.9 lpmReference

Pump flow109.8 lpmReference

Rear TypeIIReference

Controlelectronic top-link draft controlReference

Rear lift (at 24"/610mm)3304 kgReference

Rear Armstelescopic stabilizers and link endsReference

Rear PTOindependentReference

Clutchelectro-hydraulic wet discReference

Rear PTO Type540/1000Reference

Rear PTO Type540/540E/1000/1000EReference

Power at rated PTO speed54.7 kWReference

Dimensions

Wheelbase246 cmReference

Weight8840 to 9445 poundsReference

Front tire10.00-16Reference

Rear tire480/70R38Reference

Ag front10.00-16 (2WD)Reference

Ag front13.6R28 (4WD)Reference

Ag rear480/70R38Reference

Weight4009 kgReference

Weight4284 kgReference

Flange rear axleReference

Electrical

GroundnegativeReference

Battery volts12Reference

Total cold cranking amps775 CCAReference

Test results

Diesel 16-speed 4WDSeptember 2004 - 2004, Link: OCED Tractor Test 2291 fileReference

PTO performanceReference

Fuel use17.8 l/hourReference

Fuel use18.9 l/hourReference

Fuel use18.2 l/hourReference

Drawbar performanceReference

Fuel use18.5 l/hourReference

Gear 1LC used for power test.Reference

Max pull3937 kgReference

Gear 2TC used for pull test.Reference

Capacities

Capacity268 ciReference

Hydraulics

Capacity Valves16 valvesReference

Hydraulics Typeopen center | closed centerReference

Maximum operating pressure2,900 psiReference

Remote Valves2 to 4 ValvesReference

Rear Hitch category (SAE designation)Category IIReference

Rear Hitch Sensing Typelower-link draft sensingReference

PTO

PTO Power85 hpReference

Rear PTO PowerAvailableReference

Rear PTO RPM1,000 RPMReference

Steering & brakes

Brakeshydraulic wet discReference

Steering typepowerReference

General

SCV controlJoystickReference

Country of manufacturerFranceReference

Dimensions & weight

Height Over Cab275.1 cmReference

Overall Length426 cmReference

Overall Width255 cmReference

Wheels & tyres

Rear Wheel TypeAg : 420/85R30Reference

Front Wheel TypeAg: 9.5L-15Reference

Front Wheel tread range52.2 to 80 inchesReference

Operator station

Cab AvailabilityAvailableReference

Seat SuspensionTRUEReference

Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.

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