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CaseIH STX440QT Quadtrac vs CaseIH STX450QT Quadtrac
Verdict: CaseIH STX440QT Quadtrac vs CaseIH STX450QT Quadtrac
The CaseIH STX440QT Quadtrac and the CaseIH STX450QT Quadtrac are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 399 hp. CaseIH STX450QT Quadtrac is the newer design (2002 vs 2001). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.
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Fit & specs
CaseIH
62
Fit score
Best match
Clear
CaseIH
62
Fit score
Best match
Clear
Rated power
399 hp
399 hp
Confidence
40%
40%
Guide price
—
—
Overview
Manufacturer
CaseIHReference
CaseIHReference
Gear 4 used for power test.Reference
Gear 3 used for pull test.Reference
Drive
articulated crawlerReference
articulated crawlerReference
Final drives
inboard planetaryReference
inboard planetaryReference
Steering
hydrostatic powerReference
hydrostatic powerReference
Engine
Fuel tank
1135.5 LReference
1135.5 LReference
Engine
328.1 kWReference
335.6 kWReference
Drawbar (tested)
257.8 kWReference
257.8 kWReference
Displacement
14.9 LReference
14.9 LReference
Bore/Stroke
137 x 169 mmReference
137 x 169 mmReference
Power
328.1 kWReference
335.6 kWReference
Air cleaner
dual paper elementsReference
dual paper elementsReference
Compression
16.5:1Reference
16.5:1Reference
Rated RPM
2000Reference
2000Reference
Torque
2237.4 NmReference
2263.2 NmReference
Torque RPM
1400Reference
1400Reference
Starter volts
12Reference
12Reference
Max power
257.8 kWReference
257.8 kWReference
Power at rated engine speed
297.6 kWReference
297.6 kWReference
Transmission
Gears
16 forward and 2 reverseReference
16 forward and 2 reverseReference
Clutch
electro-hydraulic wet discReference
electro-hydraulic wet discReference
PTO & Hydraulics
PTO (tested)
335.8 kWReference
335.8 kWReference
Type
full power shiftReference
full power shiftReference
Rear valves
4 to 7Reference
—
Pump flow
208.2 lpmReference
208.2 lpmReference
Rear Type
IVNReference
IVN/IIIReference
Rear lift (at 24"/610mm)
8845 kgReference
8845 kgReference
Rear PTO
independentReference
independentReference
Rear PTO Type
1000Reference
1000 (1.75)Reference
PTO (claimed)
—
294.6 kWReference
Engine RPM
—
1000@1998Reference
Dimensions
Weight
23285 kgReference
23285 kgReference
Width
111 cmReference
111 cmReference
Operating weight
23285 kgReference
—
Max weight
24160 kgReference
—
Rear axle
114 mmReference
114 mmReference
Wheelbase
—
391 cmReference
Front axle
—
114 mmReference
Operating
—
23285 kgReference
Max Drawbar
—
4989 kgReference
Electrical
Ground
negativeReference
negativeReference
Charging system
alternatorReference
alternatorReference
Batteries
2Reference
—
Battery volts
12Reference
12Reference
Test results
Fuel use
83.6 l/hourReference
83.6 l/hourReference
Max pull
—
17423 kgReference
Variants
STX450
—
wheeled tractorReference
STX450QT
—
crawler tractorReference
CaseIH STX450QT Tracks
Capacities
Max capacity
—
24160 kgReference
Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.