ArticulatedPerformance profile
CaseIH STX425QT Quadtrac
The CaseIH STX425QT Quadtrac is a powerful 4WD tractor built for heavy-duty farming tasks. It features a unique Quadtrac system, which uses four tracks instead of wheels for better traction and less soil compaction. The tractor is equipped with a 16-speed forward and 2-speed reverse full power shift transmission, making it easy to change gears for different jobs. Under the hood, the STX425QT boasts a Cummins QSX15 engine. This 6-cylinder diesel engine is turbocharged and aftercooled, providing an impressive 425 horsepower. It has a large displacement of 915 cubic inches, which is above average for tractors in its class. The engine is liquid-cooled to keep it running smoothly even during long workdays. With its 44-inch wide frame and heavy operating weight of 53,264 pounds, this tractor is built to handle tough field conditions. It also features a rear hitch with category IVN/III compatibility and a pressure flow compensated hydraulic system for efficient implement control.
ManufacturerCaseIHPower425 hpEngine6-cylTransFull power shift
Quick specs
- Category
- Articulated
- Engine Power Output
- 425hp
- Operating Weight
- 53,264 lb
- Transmission
- Full power shift
At a glance
How the STX425QT Quadtrac compares
vs. Articulated medianDistribution
Engine Power (hp)
Across all Articulated tractors
425 hp · 38th
This model
180
Median 450 hp
541
This modelArticulated tractorsMediann = 62
The STX425QT Quadtrac ranks at the 38th percentile for engine power among recorded articulated tractors.
Overview
About the CaseIH STX425QT Quadtrac
The CaseIH STX425QT Quadtrac is a powerful 4WD tractor built for heavy-duty farming tasks. It features a unique Quadtrac system, which uses four tracks instead of wheels for better traction and less soil compaction. The tractor is equipped with a 16-speed forward and 2-speed reverse full power shift transmission, making it easy to change gears for different jobs. Under the hood, the STX425QT boasts a Cummins QSX15 engine. This 6-cylinder diesel engine is turbocharged and aftercooled, providing an impressive 425 horsepower. It has a large displacement of 915 cubic inches, which is above average for tractors in its class. The engine is liquid-cooled to keep it running smoothly even during long workdays. With its 44-inch wide frame and heavy operating weight of 53,264 pounds, this tractor is built to handle tough field conditions. It also features a rear hitch with category IVN/III compatibility and a pressure flow compensated hydraulic system for efficient implement control.
Full specifications
Every recorded spec
General
| Manufacturer | CaseIH |
|---|---|
| Model | STX425QT Quadtrac |
| Category | Articulated tractor |
| Type | 4x4 (Quadtrac) |
| Operating weight | 53,264lb |
Engine
| Make | Cummins |
|---|---|
| Model | QSX15 |
| Power | 425hp |
| Cylinders | 6 |
| Displacement | 915ci |
| Bore | 5.39in |
| Stroke | 6.65in |
Transmission
| Type | Full power shift |
|---|---|
| Forward gears | 16 |
| Reverse gears | 2 |
Chassis & drive
| Chassis | 4x4 (Quadtrac) |
|---|---|
| Drive | 4WD |
| Steering | Hydrostatic power |
Hydraulics
| Type | Pressure flow compensated (PFC) |
|---|
Dimensions
| Width | 44in |
|---|---|
| Operating weight | 53,264lb |
Head to head
STX425QT Quadtrac vs. Articulated median
How the CaseIH STX425QT Quadtrac compares to other Articulated tractors
| Spec | This model | Articulated median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 425 hp | 450 hp | -6% | 38th |
| Engine Displacement | 915 ci | 827 ci | +11% | 78th |
| Cylinders | 6 | 6 | at median | 50th |
| Forward Gears | 16 | 16 | at median | 50th |
| Operating Weight | 53,264 lb | 51,335 lb | +4% | 57th |
| Width | 44 in | 100 in | -56% | 29th |
Medians and percentiles are computed from the articulated tractors in our database with a recorded value for each spec (sample sizes 41–62 models).
Compare to tractors with similar specs
Commonly compared CaseIH tractors
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| CaseIH STX430QT Quadtrac | 430 hp | 54,000 lb | — | Compare → |
| CaseIH Steiger 435QT Quadtrac | 435 hp | 48,150 lb | — | Compare → |
| CaseIH STX440QT Quadtrac | 440 hp | 51,335 lb | — | Compare → |
| CaseIH Quadtrac 9380QT | 400 hp | 44,000 lb | — | Compare → |
| CaseIH Steiger 450 Quadtrac | 450 hp | 53,554 lb | — | Compare → |
Commonly compared tractors with similar horsepower from other brands
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| AGCO AGCOSTAR 8425 | 425 hp | 28,300 lb | 1995–2001 | Compare → |
| Challenger MT743 | 425 hp | 36,220 lb | 2018+ | Compare → |
| Challenger 1042 | 410.1 hp | 31,615 lb | — | Compare → |
| Big Bud 440 | 440 hp | 40,000 lb | — | Compare → |
| Challenger 95E | 410 hp | 35,520 lb | 1998–2001 | Compare → |
Explore
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Gallery
CaseIH STX425QT Quadtrac photos
FAQ
Common questions
What is the engine power output of the CaseIH STX425QT Quadtrac?
Rated engine output for the CaseIH STX425QT Quadtrac is 425 hp, delivered by a 6-cylinder engine. The engine displaces 915 ci.
Which transmission does the CaseIH STX425QT Quadtrac use?
The CaseIH STX425QT Quadtrac is equipped with a Full power shift transmission with 16 forward gears.
What type of hydraulic system does the CaseIH STX425QT Quadtrac use?
Hydraulics on the CaseIH STX425QT Quadtrac are Pressure flow compensated (PFC).
What hitch category is the CaseIH STX425QT Quadtrac?
The CaseIH STX425QT Quadtrac uses a Category IVN/III hitch.
What is the operating weight of the CaseIH STX425QT Quadtrac?
In working trim, the CaseIH STX425QT Quadtrac comes in at roughly 53,264 lb.
How do I maintain a CaseIH STX425QT Quadtrac?
Routine service for the CaseIH STX425QT Quadtrac 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.