AGCO 8425
Power
425 hp
Production
1995-2001
Engine
The Detroit Diesel engine was an option on the 8425 through 1998. Starting in 1999, only the Cummins engine was available., 6-cylinder
Transmission
Eaton Fuller
Drive
4WD
From the same series:
Introduction
AGCOSTAR 8425 Four-Wheel Drive Tractor
The AGCOSTAR 8425 is a heavy-duty, four-wheel-drive tractor produced between 1995 and 2001 in Coldwater, Ohio. This model was developed following AGCO's acquisition of McConnell in 1994 and is based on the McConnell 1000 series architecture. It was marketed under various brand identities, including White, Allis-Chalmers, and Massey Ferguson, and was available in silver, orange, or red paint schemes.
Engine and Performance
The tractor is powered by a 12.7-liter, 6-cylinder turbocharged diesel engine. It produces 425 horsepower at a rated speed of 2100 RPM and delivers a maximum torque of 1500 lb-ft at 1200-1400 RPM. Early models were equipped with Detroit Diesel powerplants, while production from 1999 onwards standardized on Cummins engines. The fuel system utilizes direct injection, and the engine is liquid-cooled with a standard coolant heater for cold-start reliability.
Transmission and Drive System
The drivetrain features an Eaton Fuller partially synchronized transmission providing 18 forward gears and 2 reverse gears. Power is transmitted through a 393.7 mm cerametallic disc clutch. The vehicle utilizes articulated power steering for maneuverability and is equipped with hydraulic dry disc brakes. Final drive power is managed through outboard planetary gear sets, ensuring durability in high-load agricultural applications.
Hydraulics and Dimensions
The hydraulic system is a closed-center design with a pump flow capacity of 35 gpm (132.5 lpm) and a system pressure of 2500 psi. It features 4 or 5 valves for implement control, with an SCV flow of 27 gpm (102.2 lpm). Physically, the tractor has a wheelbase of 137.1 inches and offers a ground clearance of 20.5 inches. The cabin is standard equipment and includes air conditioning to maintain operator comfort during long operational hours.
Conclusion
The AGCOSTAR 8425 serves as a high-capacity tractor designed for large-scale field operations requiring significant drawbar pull and hydraulic versatility. Its robust construction and standardized componentry make it a reliable choice for heavy tillage and demanding agricultural tasks.
Production Information of AGCO, 8425
- The AGCOSTAR 8425 was based on the McConnell 1000, AGCO had purchased McConnell in 1994. The 8425 was available in silver, orange, or red paint for White, Allis, and Massey customers.
- Four-wheel Drive (4WD) tractor
- Built in Coldwater, Ohio, USA
| Manufacturer | AGCO |
|---|
Dimension and Tires Information of AGCO, 8425
| Wheelbase | 137.1 inches [348 cm] |
|---|---|
| Clearance (drawbar) | 23 inches [58 cm] |
| Ground clearance | 20.5 inches [52 cm] |
| Length | 272.4 inches [691 cm] |
| Width | 152.9 inches [388 cm] |
Width over duals.
| Ag front | 20.8R42 |
|---|---|
| Ag front(optional) | 20.8R38 |
| Ag front(optional) | 30.5L-32 |
| Ag rear | 20.8R42 |
| Ag rear(optional) | 20.8R38 |
| Ag rear | 24.5-32 |
| Ag front | 24.5-32 |
Engine Specifications of AGCO, 8425
- Liquid-cooled inline
- The Detroit Diesel engine was an option on the 8425 through 1998. Starting in 1999, only the Cummins engine was available.
- Turbocharged diesel
- 6-cylinder
| Starter volts | 12 |
|---|---|
| Fuel system | Direct injection |
| Pre-heating | Coolant heater |
| Torque | 1500 lb-ft [2034.0 Nm] |
| Rated RPM | 2100 |
| Power | 425 hp [316.9 kW] |
| Displacement | 774 ci [12.7 L] |
| Torque RPM | 1400 |
| Torque | 1500 lb-ft [2034.0 Nm] |
| Torque RPM | 1200 |
Transmission Information of AGCO, 8425
Transmission variants 1
| Transmission | Eaton Fuller |
|---|---|
| Clutch | 393.7mm cerametallic disc |
| Type | Partially synchronized |
| Gears | 18 forward and 2 reverse |
Mechanical Specs of AGCO, 8425
- Four-wheel drive
- Cab standard with air conditioning.
- Hydraulic dry disc brakes
- Articulated power steering
| Final drives | Outboard planetary |
|---|
Power Information of AGCO, 8425
- Https://www.tractordata.com/farm-tractors/006/3/7/6376-agco-8425-tests.html
Hydraulics Specifications of AGCO, 8425
| Type | Closed center |
|---|---|
| SCV flow | 27 gpm [102.2 lpm] |
| Pump flow | 35 gpm [132.5 lpm] |
| Pressure | 2500 psi [172.4 bar] |
| Valves | 4 or 5 |
Electrical System of AGCO, 8425
| Battery volts | 12 |
|---|---|
| Ground | Negative |
| Battery CCA | 600 (Detroit) |
| Batteries | 3 |
| Charging system | Alternator |
| Charging system(optional) | 700 (Cummins) |
| Charging amps | 130 |
Where it sits
With 425 HP, the AGCO 8425 sits just above 8360 (360 HP) in AGCO's range. Its power puts it in the 99th percentile of 1990s models in our database (2097 machines).
Frequently asked questions
How much horsepower does the AGCO 8425 have?
The AGCO 8425 delivers 425 HP.
What years was the AGCO 8425 produced?
The AGCO 8425 was produced in 1995-2001.
What engine does the AGCO 8425 have?
The AGCO 8425 is powered by a The Detroit Diesel engine was an option on the 8425 through 1998. Starting in 1999, only the Cummins engine was available., 6-cylinder engine.
What transmission does the AGCO 8425 use?
The AGCO 8425 uses a Eaton Fuller transmission.
Is the AGCO 8425 4WD?
The AGCO 8425 is available in 4WD.