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Tractor · 1995Unverified

AGCO AGCOSTAR 8425

Name: AGCO AGCOSTAR 8425
Brand: AGCO

AGCO AGCOSTAR 8425 — Four-wheel Drive (4WD) tractor · 425 hp. Reference specifications; pending source verification.

The AGCO AGCOSTAR 8425 is a high-powered tractor, rated at 425 hp, positioning it within the more powerful machines in its class. Manufactured from 1995 to 2001, this tractor is equipped with a 6-cylinder turbocharged diesel liquid-cooled engine, and features a four-wheel drive system with an 18-speed gearbox. Its listed weight is 12836 kg, making it suitable for large-scale operations covering approximately 1,500+ acres.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power

425 hp

Max power

258.5 kW

Weight

12836 kg

Catalogue coverage

Variants represented

Richest spec table

81 rows

Recorded power

425 hp

Recorded weight

12836 kg

Transmissions

18-speed partially synchronized

Production years

1995-2001

Verified variants

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

Hover a source tag to verify

Overview

ManufacturerAGCOReference

Four-wheel Drive (4WD) tractorReference

Built in Coldwater, Ohio, USAReference

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.Reference

Four-wheel driveReference

Final drivesoutboard planetaryReference

Articulated power steeringReference

Hydraulic dry disc brakesReference

Cab standard with air conditioning.Reference

Engine

Cummins 14.0L 6-cyl dieselReference

Detroit Diesel 12.7L 6-cyl dieselReference

Fuel tank870.6 LReference

Engine316.9 kWReference

Drawbar (tested)258.5 kWReference

Cummins N14Reference

turbocharged aftercooled dieselReference

6-cylinder 24-valveReference

liquid-cooled inlineReference

Displacement14.0 LReference

Bore/Stroke140 x 152 mmReference

Power316.9 kWReference

Fuel systemdirect injectionReference

Air cleanerdual paper elements with aspiratorReference

Pre-heatingcoolant heaterReference

Compression16.5:1Reference

Rated RPM2100Reference

Torque2034.0 NmReference

Torque RPM1400Reference

Starter volts12Reference

Detroit Diesel Series 60Reference

turbocharged dieselReference

6-cylinderReference

The Detroit Diesel engine was an option on the 8425 through 1998. Starting in 1999, only the Cummins engine was available.Reference

Displacement12.7 LReference

Torque RPM1200Reference

Max power258.5 kWReference

Transmission

18-speed partially synchronizedReference

TransmissionEaton FullerReference

Typepartially synchronizedReference

Gears18 forward and 2 reverseReference

Clutch393.7mm cerametallic discReference

PTO & Hydraulics

Typeclosed centerReference

Pressure172.4 barReference

Valves4 or 5Reference

Pump flow132.5 lpmReference

SCV flow102.2 lpmReference

Dimensions

Wheelbase348 cmReference

Weight12836 kgReference

Front tire20.8R42Reference

Rear tire20.8R42Reference

Ag front20.8R42Reference

Ag rear20.8R42Reference

Ag front24.5-32Reference

Ag front30.5L-32Reference

Ag front20.8R38Reference

Ag rear24.5-32Reference

Ag rear30.5L-32Reference

Ag rear20.8R38Reference

Length691 cmReference

Width388 cmReference

Ground clearance52 cmReference

Clearance (drawbar)58 cmReference

Shipping12836 kgReference

Ballasted18314 kgReference

Electrical

GroundnegativeReference

Charging systemalternatorReference

Charging amps130Reference

Batteries3Reference

Battery CCA600 (Detroit)Reference

Battery CCA700 (Cummins)Reference

Battery volts12Reference

Capacities

Max capacity19278 kgReference

AGCO 8425 Height

Hood240 cmReference

Cab338 cmReference

Exhaust352 cmReference

Test results

Cummins diesel 18-speed 4WDOctober 1 - 22, 1996Link: OCED Tractor Test 1721 fileReference

Drawbar performanceReference

Fuel use83.6 l/hourReference

Gear 5L used for power test.Reference

Max pull16101 kgReference

Gear 2H used for pull test.Reference

Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.

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