AGCO

AGCO AGCOSTAR 8425

The AGCO AGCOSTAR 8425 is a four-wheel drive (4WD) tractor produced from 1995 to 2001. Built in Coldwater, Ohio, USA, it was based on the McConnell 1000 after AGCO purchased McConnell in 1994. The 8425 was available in silver, orange, or red paint for White, Allis, and Massey customers. It features powerful engine options including the Cummins 14.0L 6-cylinder diesel and the Detroit Diesel 12.7L 6-cylinder diesel (available until 1998). The tractor has an 18-speed partially synchronized Eaton Fuller transmission, articulated power steering, hydraulic dry disc brakes, and a cab with air conditioning. It offers strong hydraulic capabilities with a closed center system and multiple valve options. Dimensions include a 137.1 inch wheelbase, 272.4 inch length, and a width of 152.9 inches over duals. The tractor weighs 28300 lbs shipping weight and can be ballasted up to 40375 lbs. Electrical system features a 130 amp alternator and three batteries. The AGCOSTAR 8425 is a robust and versatile 4WD tractor designed for heavy-duty farm work.
Power425 hp
Founded1995 - 2001
Model8425

Technical Specifications

Detailed specifications and technical data for AGCO AGCOSTAR 8425

Power
Engine power425 hp (316.9 kW)
Drawbar (tested)346.61 hp (258.5 kW)
Tires
Ag rear20.8R42, 24.5-32, 30.5L-32, 20.8R38
Ag front20.8R42, 24.5-32, 30.5L-32, 20.8R38
Engine
Power425 hp (316.9 kW)
Torque1500 lb-ft (2034.0 Nm)
OptionsCummins 14.0L 6-cyl diesel, Detroit Diesel 12.7L 6-cyl diesel
Fuel tank230 gal (870.6 L)
Rated RPM2100
Torque RPM1400
Air cleanerdual paper elements with aspirator
Bore/Stroke5.50x6.00 inches (140 x 152 mm)
Compression16.5:1
Cummins N14turbocharged aftercooled diesel, 6-cylinder 24-valve, liquid-cooled inline
Fuel systemdirect injection
Pre-heatingcoolant heater
Displacement855 ci (14.0 L)
Starter volts12
Detroit Diesel Power425 hp (316.9 kW)
Detroit Diesel notesThe Detroit Diesel engine was an option on the 8425 through 1998. Starting in 1999, only the Cummins engine was available.
Detroit Diesel Torque1500 lb-ft (2034.0 Nm)
Detroit Diesel Rated RPM2100
Detroit Diesel Series 60turbocharged diesel, 6-cylinder, liquid-cooled inline
Detroit Diesel Torque RPM1200
Detroit Diesel Fuel systemdirect injection
Detroit Diesel Pre-heatingcoolant heater
Detroit Diesel Displacement774 ci (12.7 L)
Height
Cab133.2 inches (338 cm)
Hood94.6 inches (240 cm)
Exhaust138.9 inches (352 cm)
Weight
Shipping28300 lbs (12836 kg)
Ballasted40375 lbs (18314 kg)
Max capacity42500 lbs (19278 kg)
Dimensions
Width152.9 inches (388 cm) (Width over duals)
Length272.4 inches (691 cm)
Wheelbase137.1 inches (348 cm)
Ground clearance20.5 inches (52 cm)
Clearance (drawbar)23 inches (58 cm)
Electrical
Groundnegative
Batteries3
Battery CCA600 (Detroit), 700 (Cummins)
Battery volts12
Charging amps130
Charging systemalternator
Hydraulics
Typeclosed center
Valves4 or 5
Pressure2500 psi (172.4 bar)
SCV flow27 gpm (102.2 lpm)
Pump flow35 gpm (132.5 lpm)
Mechanical
Cabstandard with air conditioning
DriveFour-wheel drive
BrakesHydraulic dry disc brakes
SteeringArticulated power steering
Final drivesoutboard planetary
Production
TypeFour-wheel Drive (4WD) tractor
NotesThe 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.
Built inColdwater, Ohio, USA
Years produced1995 - 2001
Transmission
Typepartially synchronized
Gears18 forward and 2 reverse
Clutch393.7mm cerametallic disc
TransmissionEaton Fuller