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Challenger MT738 to MT865E specifications

Entries in this reference
Listing-entry count
7
Short answer

Challenger MT738 to MT865E: tractors.

Selected configuration figures
ConfigurationDocumented field and quantity
MT738
Rated Power (gross)
374 hp
Weight
33,443 lb
MT740
Rated Power (gross)
400 hp
Weight
33,443 lb
MT743
Rated Power (gross)
425 hp
Weight
33,443 lb
MT851
Rated Power (gross)
504.2 hp
Weight
42,000 lb
MT855E
Power (gross)
490 hp
Weight
42,596 lb
MT856
Rated Power (gross)
556.5 hp
Weight
42,000 lb
MT865E
Power (gross)
540 hp
Weight
42,596 lb
MT738 to MT865E specification matrix — Listing labels reported by the source
Publisher nameSource guideListing-entry countLabels named by the source
ChallengerMT738 to MT865E7MT738, MT740, MT743, MT851, MT855E, MT856, and 1 more
Engine
SpecificationMT738MT740MT743MT851MT855EMT856MT865E
Fuel tank180 gal180 gal180 gal350 gal330 gal350 gal330 gal
Exhaust fluid (DEF)21 gal21 gal21 gal35.7 gal30.5 gal35.7 gal30.5 gal
EngineAGCO Power 9.8L 7-cyl dieselAGCO Power 9.8L 7-cyl dieselAGCO Power 9.8L 7-cyl dieselMAN 15.3L 6-cyl dieselAGCO Power 16.8L 12-cyl dieselMAN 15.3L 6-cyl dieselAGCO Power 16.8L 12-cyl diesel
Transmission and speeds
SpecificationMT738MT740MT743MT851MT855EMT856MT865E
Transmissioninfinitely-variable transmissioninfinitely-variable transmissioninfinitely-variable transmissioncontinuously-variable transmission16-speed full power shiftcontinuously-variable transmission16-speed full power shift
Typeinfinitely-variable transmissioninfinitely-variable transmissioninfinitely-variable transmissioncontinuously-variable transmissionfull power shiftcontinuously-variable transmissionfull power shift
Gearsinfinite forward and reverseinfinite forward and reverseinfinite forward and reverseinfinite forward and reverse16 forward and 4 reverseinfinite forward and reverse16 forward and 4 reverse
SpecificationMT855EMT865E
Clutchhydraulic wet dischydraulic wet disc
Power
SpecificationMT738MT740MT743MT851MT855EMT856MT865E
Engine (gross)374 hp400 hp425 hp504.2 hp490 hp556.5 hp540 hp
SpecificationMT738MT740MT743MT855EMT865E
PTO (claimed)284 hp310 hp334 hp400 hp425 hp
Drawbar (tested)270.16 hp293.03 hp313.14 hp360.27 hp392.12 hp
PTO (tested)324.64 hp350.91 hp376.97 hp453.59 hp521.27 hp
Mechanical
SpecificationMT738MT740MT743MT851MT855EMT856MT865E
Drivecrawlercrawlercrawlercrawlercrawlercrawlercrawler
MechanicalCab standard with air-conditioningCab standard with air-conditioningCab standard with air-conditioningCab standard with air-conditioningCab standard with air-conditioningCab standard with air-conditioningCab standard with air-conditioning
SpecificationMT855EMT865E
Steeringpower differentialpower differential
Hydraulics
SpecificationMT738MT740MT743MT851MT855EMT856MT865E
Typeload sensingload sensingload sensingclosed center pressure-flow compensatedclosed center pressure flow compensatedclosed center pressure-flow compensatedclosed center pressure flow compensated
Pump flow58 gpm58 gpm58 gpm58.1 gpm58.1 gpm58.1 gpm58.1 gpm
SpecificationMT738MT740MT743MT855EMT865E
Valves4 to 64 to 64 to 64 to 64 to 6
SpecificationMT851MT855EMT856MT865E
Pressure2,900 psi2,900 psi2,900 psi2,900 psi
SpecificationMT851MT856
Rear valves4 to 84 to 8
SpecificationMT855EMT865E
SCV flow26.4 gpm26.4 gpm
Tractor hitch
SpecificationMT738MT740MT743
Rear TypeIII/IVNIII/IVNIII/IVN
SpecificationMT738MT740MT743MT855EMT865E
Rear lift19,000 lb19,000 lb19,000 lb19,500 lb19,500 lb
SpecificationMT855EMT865E
DrawbarCat. 4Cat. 4
Dimensions & Tracks
SpecificationMT738MT740MT743MT851MT855EMT856MT865E
Weight33,443 lb33,443 lb33,443 lb42,000 lb42,596 lb42,000 lb42,596 lb
Dimensions & TracksTracksTracksTracksTracks18-inch tracksTracks18-inch tracks
SpecificationMT851MT856
Wheelbase118 in118 in
Electrical
SpecificationMT738MT740MT743MT851MT855EMT856MT865E
Groundnegativenegativenegativenegativenegativenegativenegative
Charging systemalternatoralternatoralternatoralternatoralternatoralternatoralternator
SpecificationMT851MT855EMT856MT865E
Charging amps325300 (2x 150)325300 (2x 150)
Batteries3434
Battery volts12121212
SpecificationMT855EMT865E
Battery CCA10001000
Engine Detail
SpecificationMT738MT740MT743MT851MT855EMT856MT865E
Displacement599 cu in599 cu in599 cu in933.7 cu in1,028 cu in933.7 cu in1,028 cu in
Bore/Stroke4.37x5.709 in / 111 x 145 mm4.37x5.709 in / 111 x 145 mm4.37x5.709 in / 111 x 145 mm5.43x6.69 in / 138 x 170 mm4.370x5.709 in / 111 x 145 mm5.43x6.69 in / 138 x 170 mm4.370x5.709 in / 111 x 145 mm
Engine DetailAGCO Power; turbocharged intercooled diesel; 7-cylinderAGCO Power; turbocharged intercooled diesel; 7-cylinderAGCO Power; turbocharged intercooled diesel; 7-cylinderMAN D3876; turbocharged diesel; 6-cylinderAGCO Power; turbocharged diesel; 12-cylinder 48-valveMAN D3876; turbocharged diesel; 6-cylinderAGCO Power; turbocharged diesel; 12-cylinder 48-valve
SpecificationMT738MT740MT743MT851MT856
Rated Power (gross)374 hp400 hp425 hp504.2 hp556.5 hp
Rated RPM17001700170017301730
SpecificationMT738MT740MT743
Starter typeelectricelectricelectric
SpecificationMT851MT855EMT856MT865E
Torque1,844 lb-ft1,740 lb-ft1,991 lb-ft1,917 lb-ft
Torque RPM1450150014501500
Starterelectricelectricelectricelectric
Starter volts24122412
SpecificationMT851MT856
Oil change500 h500 h
SpecificationMT855EMT865E
EmissionsTier IVTier IV
Emission controlselective catalytic reduction (SCR)selective catalytic reduction (SCR)
Power (gross)490 hp540 hp
Maximum Power529 hp583 hp
Dimensions and weight
SpecificationMT738MT740MT743MT851MT856
Max weight41,000 lb41,000 lb41,000 lb59,000 lb59,000 lb
SpecificationMT738MT740MT743MT855EMT865E
Front axleBarBarBarBarBar
DimensionsBar rear axleBar rear axleBar rear axleBar rear axleBar rear axle
SpecificationMT738MT740MT743MT851MT855EMT856MT865E
Gauge72 to 88 in / 182 to 223 cm72 to 88 in / 182 to 223 cm72 to 88 in / 182 to 223 cm88 to 128 in / 223 to 325 cm90 to 128 in / 228 to 325 cm88 to 128 in / 223 to 325 cm90 to 128 in / 228 to 325 cm
SpecificationMT851MT856
Length266 in266 in
Width116.1 in*Minimum width116.1 in*Minimum width
Height148 in148 in
Ground clearance14.1 in14.1 in
Power take-off (PTO)
SpecificationMT851MT855EMT856MT865E
Rear PTOindependentindependentindependentindependent
Rear PTO Type10001000 (1.75)10001000 (1.75)
SpecificationMT855EMT865E
Clutchelectronicelectronic
Challenger MT855E Tracks
SpecificationMT855E
Width18 in
Challenger MT855E Weight
SpecificationMT855E
Shipping42,596 lb
Max capacity55,913 lb
Max Drawbar10,000 lb (Cat. 4)
Challenger MT865E Tracks
SpecificationMT865E
Width18 in
Challenger MT865E Weight
SpecificationMT865E
Shipping42,596 lb
Max capacity55,913 lb
Max Drawbar10,000 lb (Cat. 4)
Variants — Source comparison annotation
Source guideDiffering-field count reported
MT738 to MT865E64
Ratios
FigureMT738MT740MT743MT851MT855EMT856MT865E
Engine horsepower per 1,000 lb of weight11.212.012.712.011.513.312.7
Pump flow per engine horsepower0.16 gpm0.15 gpm0.14 gpm0.12 gpm0.12 gpm0.10 gpm0.11 gpm
Fuel tank per engine horsepower0.48 gal0.45 gal0.42 gal0.69 gal0.67 gal0.63 gal0.61 gal
FigureMT738MT740MT743MT855EMT865E
PTO power as a share of engine power76%78%79%82%79%
Reference directory classification
Equipment grouptractor
MT738 to MT865E: forum references — Forum-title search
Forum indexEquipment class queriedNames in the searchMatching titles
The Farming ForumtractorChallenger and the MT855 line that the MT855E belongs to (no title names the exact model). That is too few titles to say what owners mostly ask about, so the most recent are listed instead1
Used market for the MT738 to MT865E — Dated first-page listing snapshot
Observation dateListing sourceEquipment searchListings
2026-09-24TractorHouseChallenger tractor39
ModelListedModel yearsLowest askingHighest askingMedian askingMedian hours
MT73862018 to 2020$109,000$200,000$154,5004,522
MT74022018 to 2023$210,000$375,082$292,541None shown
MT743102018 to 2020$216,740$285,000$232,5001,925
MT85112024$545,251$545,251$545,251None shown
MT855E52015 to 2018$141,500$245,000$189,0001,545
MT865E152015 to 2020$120,000$305,556$207,4504,153
MT738 to MT865E: recall reference — Dated CPSC search
Search dateDatabaseNames queriedSearch result
2026-09-24U.S. Consumer Product Safety CommissionChallenger together with the tractor MT738, MT740, MT743, MT851No matching recall in this search

Sources for this page

Evidence classDocument, classification and recorded date
Reference site
Reference site
Reference site
Reference site
Reference site
Reference site
Reference site
Forum threads
Used-market listings
Federal agency data

Challenger MT738 to MT865E: Configuration records

MT738
SpecificationSource figure
Engine
Fuel tank180 gal
Exhaust fluid (DEF)21 gal
Power
Engine (gross)374 hp
PTO (claimed)284 hp
Drawbar (tested)270.16 hp
PTO (tested)324.64 hp
Mechanical
Drivecrawler
Hydraulics
Valves4 to 6
Pump flow58 gpm
Type — Hydraulicsload sensing
Tractor hitch
Rear TypeIII/IVN
Rear lift19,000 lb
Electrical
Groundnegative
Charging systemalternator
Engine Detail
Displacement599 cu in
Bore/Stroke4.37x5.709 in / 111 x 145 mm
Rated Power (gross)374 hp
Rated RPM1700
Starter typeelectric
Transmission and speeds
Transmissioninfinitely-variable transmission
Gearsinfinite forward and reverse
Dimensions and weight
Max weight41,000 lb
Front axleBar
Gauge72 to 88 in / 182 to 223 cm
Additional specifications
EngineAGCO Power 9.8L 7-cyl diesel
Typeinfinitely-variable transmission
MechanicalCab standard with air-conditioning
Weight33,443 lb
Dimensions & TracksTracks
Engine DetailAGCO Power; turbocharged intercooled diesel; 7-cylinder

Source

MT740
SpecificationSource figure
Engine
Fuel tank180 gal
Exhaust fluid (DEF)21 gal
Power
Engine (gross)400 hp
PTO (claimed)310 hp
Drawbar (tested)293.03 hp
PTO (tested)350.91 hp
Mechanical
Drivecrawler
Hydraulics
Valves4 to 6
Pump flow58 gpm
Type — Hydraulicsload sensing
Tractor hitch
Rear TypeIII/IVN
Rear lift19,000 lb
Electrical
Groundnegative
Charging systemalternator
Engine Detail
Displacement599 cu in
Bore/Stroke4.37x5.709 in / 111 x 145 mm
Rated Power (gross)400 hp
Rated RPM1700
Starter typeelectric
Transmission and speeds
Transmissioninfinitely-variable transmission
Gearsinfinite forward and reverse
Dimensions and weight
Max weight41,000 lb
Front axleBar
Gauge72 to 88 in / 182 to 223 cm
Additional specifications
EngineAGCO Power 9.8L 7-cyl diesel
Typeinfinitely-variable transmission
MechanicalCab standard with air-conditioning
Weight33,443 lb
Dimensions & TracksTracks
Engine DetailAGCO Power; turbocharged intercooled diesel; 7-cylinder

Source

MT743
SpecificationSource figure
Engine
Fuel tank180 gal
Exhaust fluid (DEF)21 gal
Power
Engine (gross)425 hp
PTO (claimed)334 hp
Drawbar (tested)313.14 hp
PTO (tested)376.97 hp
Mechanical
Drivecrawler
Hydraulics
Valves4 to 6
Pump flow58 gpm
Type — Hydraulicsload sensing
Tractor hitch
Rear TypeIII/IVN
Rear lift19,000 lb
Electrical
Groundnegative
Charging systemalternator
Engine Detail
Displacement599 cu in
Bore/Stroke4.37x5.709 in / 111 x 145 mm
Rated Power (gross)425 hp
Rated RPM1700
Starter typeelectric
Transmission and speeds
Transmissioninfinitely-variable transmission
Gearsinfinite forward and reverse
Dimensions and weight
Max weight41,000 lb
Front axleBar
Gauge72 to 88 in / 182 to 223 cm
Additional specifications
EngineAGCO Power 9.8L 7-cyl diesel
Typeinfinitely-variable transmission
MechanicalCab standard with air-conditioning
Weight33,443 lb
Dimensions & TracksTracks
Engine DetailAGCO Power; turbocharged intercooled diesel; 7-cylinder

Source

MT851
SpecificationSource figure
Engine
Fuel tank350 gal
Exhaust fluid (DEF)35.7 gal
Power
Engine (gross)504.2 hp
Mechanical
Drivecrawler
Hydraulics
Pump flow58.1 gpm
Pressure2,900 psi
Rear valves4 to 8
Type — Hydraulicsclosed center pressure-flow compensated
Power take-off (PTO)
Rear PTOindependent
Rear PTO Type1000
Electrical
Groundnegative
Charging systemalternator
Charging amps325
Batteries3
Battery volts12
Engine Detail
Displacement933.7 cu in
Bore/Stroke5.43x6.69 in / 138 x 170 mm
Rated Power (gross)504.2 hp
Rated RPM1730
Torque1,844 lb-ft
Torque RPM1450
Starterelectric
Starter volts24
Oil change500 h
Transmission and speeds
Transmissioncontinuously-variable transmission
Gearsinfinite forward and reverse
Dimensions and weight
Max weight59,000 lb
Gauge88 to 128 in / 223 to 325 cm
Length266 in
Height148 in
Ground clearance14.1 in
Additional specifications
EngineMAN 15.3L 6-cyl diesel
Typecontinuously-variable transmission
MechanicalCab standard with air-conditioning
Weight42,000 lb
Dimensions & TracksTracks
Wheelbase118 in
Engine DetailMAN D3876; turbocharged diesel; 6-cylinder
Width116.1 in*Minimum width

Source

MT855E
SpecificationSource figure
Engine
Fuel tank330 gal
Exhaust fluid (DEF)30.5 gal
Power
Engine (gross)490 hp
PTO (claimed)400 hp
Drawbar (tested)360.27 hp
PTO (tested)453.59 hp
Mechanical
Drivecrawler
Steeringpower differential
Hydraulics
Valves4 to 6
Pump flow58.1 gpm
Pressure2,900 psi
SCV flow26.4 gpm
Type — Hydraulicsclosed center pressure flow compensated
Tractor hitch
Rear lift19,500 lb
DrawbarCat. 4
Power take-off (PTO)
Rear PTOindependent
Rear PTO Type1000 (1.75)
Electrical
Groundnegative
Charging systemalternator
Charging amps300 (2x 150)
Batteries4
Battery volts12
Battery CCA1000
Engine Detail
Displacement1,028 cu in
Bore/Stroke4.370x5.709 in / 111 x 145 mm
Torque1,740 lb-ft
Torque RPM1500
Starterelectric
Starter volts12
EmissionsTier IV
Emission controlselective catalytic reduction (SCR)
Power (gross)490 hp
Maximum Power529 hp
Transmission and speeds
Transmission16-speed full power shift
Gears16 forward and 4 reverse
Dimensions and weight
Front axleBar
Gauge90 to 128 in / 228 to 325 cm
Weight
Shipping42,596 lb
Max capacity55,913 lb
Max Drawbar10,000 lb (Cat. 4)
Additional specifications
EngineAGCO Power 16.8L 12-cyl diesel
Typefull power shift
Clutchhydraulic wet disc
MechanicalCab standard with air-conditioning
Weight42,596 lb
Dimensions & Tracks18-inch tracks
Engine DetailAGCO Power; turbocharged diesel; 12-cylinder 48-valve

Source

MT856
SpecificationSource figure
Engine
Fuel tank350 gal
Exhaust fluid (DEF)35.7 gal
Power
Engine (gross)556.5 hp
Mechanical
Drivecrawler
Hydraulics
Pump flow58.1 gpm
Pressure2,900 psi
Rear valves4 to 8
Type — Hydraulicsclosed center pressure-flow compensated
Power take-off (PTO)
Rear PTOindependent
Rear PTO Type1000
Electrical
Groundnegative
Charging systemalternator
Charging amps325
Batteries3
Battery volts12
Engine Detail
Displacement933.7 cu in
Bore/Stroke5.43x6.69 in / 138 x 170 mm
Rated Power (gross)556.5 hp
Rated RPM1730
Torque1,991 lb-ft
Torque RPM1450
Starterelectric
Starter volts24
Oil change500 h
Transmission and speeds
Transmissioncontinuously-variable transmission
Gearsinfinite forward and reverse
Dimensions and weight
Max weight59,000 lb
Gauge88 to 128 in / 223 to 325 cm
Length266 in
Height148 in
Ground clearance14.1 in
Additional specifications
EngineMAN 15.3L 6-cyl diesel
Typecontinuously-variable transmission
MechanicalCab standard with air-conditioning
Weight42,000 lb
Dimensions & TracksTracks
Wheelbase118 in
Engine DetailMAN D3876; turbocharged diesel; 6-cylinder
Width116.1 in*Minimum width

Source

MT865E
SpecificationSource figure
Engine
Fuel tank330 gal
Exhaust fluid (DEF)30.5 gal
Power
Engine (gross)540 hp
PTO (claimed)425 hp
Drawbar (tested)392.12 hp
PTO (tested)521.27 hp
Mechanical
Drivecrawler
Steeringpower differential
Hydraulics
Valves4 to 6
Pump flow58.1 gpm
Pressure2,900 psi
SCV flow26.4 gpm
Type — Hydraulicsclosed center pressure flow compensated
Tractor hitch
Rear lift19,500 lb
DrawbarCat. 4
Power take-off (PTO)
Rear PTOindependent
Rear PTO Type1000 (1.75)
Electrical
Groundnegative
Charging systemalternator
Charging amps300 (2x 150)
Batteries4
Battery volts12
Battery CCA1000
Engine Detail
Displacement1,028 cu in
Bore/Stroke4.370x5.709 in / 111 x 145 mm
Torque1,917 lb-ft
Torque RPM1500
Starterelectric
Starter volts12
EmissionsTier IV
Emission controlselective catalytic reduction (SCR)
Power (gross)540 hp
Maximum Power583 hp
Transmission and speeds
Transmission16-speed full power shift
Gears16 forward and 4 reverse
Dimensions and weight
Front axleBar
Gauge90 to 128 in / 228 to 325 cm
Weight
Shipping42,596 lb
Max capacity55,913 lb
Max Drawbar10,000 lb (Cat. 4)
Additional specifications
EngineAGCO Power 16.8L 12-cyl diesel
Typefull power shift
Clutchhydraulic wet disc
MechanicalCab standard with air-conditioning
Weight42,596 lb
Dimensions & Tracks18-inch tracks
Engine DetailAGCO Power; turbocharged diesel; 12-cylinder 48-valve

Source

Compare Challenger MT738, MT740, MT743, MT851, MT855E, MT856, MT865E
Engine
SpecificationMT738MT740MT743MT851MT855EMT856MT865E
Fuel tank180 gal180 gal180 gal350 gal330 gal350 gal330 gal
Exhaust fluid (DEF)21 gal21 gal21 gal35.7 gal30.5 gal35.7 gal30.5 gal
EngineAGCO Power 9.8L 7-cyl dieselAGCO Power 9.8L 7-cyl dieselAGCO Power 9.8L 7-cyl dieselMAN 15.3L 6-cyl dieselAGCO Power 16.8L 12-cyl dieselMAN 15.3L 6-cyl dieselAGCO Power 16.8L 12-cyl diesel
Transmission and speeds
SpecificationMT738MT740MT743MT851MT855EMT856MT865E
Transmissioninfinitely-variable transmissioninfinitely-variable transmissioninfinitely-variable transmissioncontinuously-variable transmission16-speed full power shiftcontinuously-variable transmission16-speed full power shift
Typeinfinitely-variable transmissioninfinitely-variable transmissioninfinitely-variable transmissioncontinuously-variable transmissionfull power shiftcontinuously-variable transmissionfull power shift
Gearsinfinite forward and reverseinfinite forward and reverseinfinite forward and reverseinfinite forward and reverse16 forward and 4 reverseinfinite forward and reverse16 forward and 4 reverse
Power
SpecificationMT738MT740MT743MT851MT855EMT856MT865E
Engine (gross)374 hp400 hp425 hp504.2 hp490 hp556.5 hp540 hp
Mechanical
SpecificationMT738MT740MT743MT851MT855EMT856MT865E
Drivecrawlercrawlercrawlercrawlercrawlercrawlercrawler
MechanicalCab standard with air-conditioningCab standard with air-conditioningCab standard with air-conditioningCab standard with air-conditioningCab standard with air-conditioningCab standard with air-conditioningCab standard with air-conditioning
Hydraulics
SpecificationMT738MT740MT743MT851MT855EMT856MT865E
Pump flow58 gpm58 gpm58 gpm58.1 gpm58.1 gpm58.1 gpm58.1 gpm
Dimensions & Tracks
SpecificationMT738MT740MT743MT851MT855EMT856MT865E
Weight33,443 lb33,443 lb33,443 lb42,000 lb42,596 lb42,000 lb42,596 lb
Dimensions & TracksTracksTracksTracksTracks18-inch tracksTracks18-inch tracks
Electrical
SpecificationMT738MT740MT743MT851MT855EMT856MT865E
Groundnegativenegativenegativenegativenegativenegativenegative
Charging systemalternatoralternatoralternatoralternatoralternatoralternatoralternator
Engine Detail
SpecificationMT738MT740MT743MT851MT855EMT856MT865E
Displacement599 cu in599 cu in599 cu in933.7 cu in1,028 cu in933.7 cu in1,028 cu in
Bore/Stroke4.37x5.709 in / 111 x 145 mm4.37x5.709 in / 111 x 145 mm4.37x5.709 in / 111 x 145 mm5.43x6.69 in / 138 x 170 mm4.370x5.709 in / 111 x 145 mm5.43x6.69 in / 138 x 170 mm4.370x5.709 in / 111 x 145 mm
Engine DetailAGCO Power; turbocharged intercooled diesel; 7-cylinderAGCO Power; turbocharged intercooled diesel; 7-cylinderAGCO Power; turbocharged intercooled diesel; 7-cylinderMAN D3876; turbocharged diesel; 6-cylinderAGCO Power; turbocharged diesel; 12-cylinder 48-valveMAN D3876; turbocharged diesel; 6-cylinderAGCO Power; turbocharged diesel; 12-cylinder 48-valve
Dimensions and weight
SpecificationMT738MT740MT743MT851MT855EMT856MT865E
Gauge72 to 88 in / 182 to 223 cm72 to 88 in / 182 to 223 cm72 to 88 in / 182 to 223 cm88 to 128 in / 223 to 325 cm90 to 128 in / 228 to 325 cm88 to 128 in / 223 to 325 cm90 to 128 in / 228 to 325 cm

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