John Deere 8120T
The John Deere 8120T is a tractor produced by John Deere. It is equipped with a 496 ci 8.1 L engine. The listed engine power is Diesel (net): 200 hp / 149.1 kW; Diesel (gross): 208 hp / 155.1 kW. Transmission: John Deere PowerShift. Drive type: crawler. Operating weight: 25,950 lbs 11770 kg.
Engine Power
Diesel (net): 200 hp / 149.1 kW; Diesel (gross): 208 hp / 155.1 kW
Drive & Traction
crawler
Fuel & Capacities
130 gal
492.1 L
Transmission
John Deere PowerShift
Operating Weight
25,950 lbs
11770 kg
Overview
![]() | 2002 - 2005
8020 SeriesAgricultural Crawler tractor
8020 Series
Agricultural Crawler tractor |
|---|
Production | |
|---|---|
Manufacturer | John Deere |
Agricultural Crawler tractor | |
Built in Waterloo, Iowa, USA | |
Variants | |
|---|---|
8120 | wheeled tractor |
8120T | crawler |
John Deere 8120T Engine | |
|---|---|
John Deere 8.1L 6-cyl diesel | |
Engine details ... |
John Deere 8120T Transmission | |
|---|---|
16-speed full power shift | |
Transmission details ... |
John Deere 8120T Power | |
|---|---|
Engine (gross) | 208 hp
155.1 kW |
Engine (net) | 200 hp
149.1 kW |
Engine (max) | 230 hp
171.5 kW |
PTO (claimed) | 170 hp
126.8 kW |
Mechanical | |
|---|---|
Drive | crawler |
Steering | electro-hydraulic power |
Hydraulic wet disc brakes | |
Cab standard. | |
Capacity | |
|---|---|
Fuel | 130 gal
492.1 L |
Hydraulic system | 65 gal
246.0 L |
Hydraulics | |
|---|---|
Type | closed center pressure flow compensated (PFC) |
Capacity | 65 gal
246.0 L |
Pressure | 2900 psi
200.0 bar |
Valves | 5 |
Pump flow | 30 gpm
113.6 lpm |
Total flow | 33.5 gpm
126.8 lpm |
42.5 gpm (optional)
160.9 lpm | |
Tractor hitch | |
|---|---|
Rear Type | III/IIIN |
Rear lift | 15,180 lbs
6885 kg |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Rear PTO Type | 1000 (1-3/4) |
Dimensions & Tracks | |
|---|---|
Wheelbase | 89 inches
226 cm |
120 inches (wide track option)
304 cm | |
Weight | 25,950 lbs
11770 kg |
24-inch tracks | |
Full dimensions and tracks ... | |
Electrical | |
|---|---|
Ground | negative |
Charging system | alternator |
Charging amps | 150 |
Batteries | 2 |
Battery CCA | 925 |
Battery volts | 12 |
Engine
Engine Detail — 496 ci / 8.1 L Diesel
Manufacturer | John Deere |
Configuration | turbocharged diesel, 6-cylinder, liquid-cooled inline |
Displacement | 496 ci
8.1 L |
Bore/Stroke | 4.56x5.06 inches
116 x 129 mm |
Rated Power (net) | 200 hp
149.1 kW |
Rated Power (gross) | 208 hp
155.1 kW |
Maximum Power (net) | 220 hp
164.1 kW |
Maximum Power (gross) | 230 hp
171.5 kW |
Compression | 16.5:1 |
Rated RPM | 2200 |
Idle RPM | 900-2300 |
Operating RPM | 1500-2200 |
Starter volts | 12 |
Coolant capacity | 35.9 qts
34.0 L |
Oil capacity | 22.7 qts
21.5 L |
Oil change | 250 h |
Transmission
Transmission — John Deere PowerShift
Transmission | John Deere PowerShift |
Type | full power shift |
Gears | 16 forward and 4 reverse |
Oil capacity | 260 qts
246.1 L |
![]() | |
Dimensions
John Deere 8120T Tracks | |
|---|---|
Width | 24 inches
60 cm |
Length on ground | 89 inches
226 cm |
Area on ground | 4272 in²
2.8 m² |
Width | 16 inches
40 cm |
Length on ground | 89 inches
226 cm |
Area on ground | 2848 in²
1.8 m² |
Width | 18 inches
45 cm |
Length on ground | 89 inches
226 cm |
Area on ground | 3204 in²
2.1 m² |
Width | 30 inches
76 cm |
Length on ground | 89 inches
226 cm |
Area on ground | 5340 in²
3.4 m² |
Dimensions | |
|---|---|
Wheelbase | 89 inches
226 cm |
120 inches (wide track option)
304 cm | |
Length | 207 inches
525 cm |
219.6 inches (with front weights)
557 cm | |
Width | 103.7 inches (min)
263 cm |
150 inches (max)
381 cm | |
Height (cab) | 122.9 inches
312 cm |
Shipping weight | 25,950 lbs
11770 kg |
Max weight | 31,500 lbs
14288 kg |
Clearance (rear axle) | 21.7 inches
55 cm |
Clearance (drawbar) | 17.7 inches
44 cm |
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for John Deere 8120T.
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
John Deere 8120T Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for John Deere 8120T.
Converted Equivalents:
Horsepower (HP)0 hp
Kilowatts (kW)0 kW
Metric Horsepower (PS / CV)0 PS
Direct Competitor Comparison
Compare John Deere 8120T against same-era industry alternatives in the same horsepower class.
Current Model
John Deere
John Deere 8120T
Engine Power:Diesel (net): 200 hp / 149.1 kW; Diesel (gross): 208 hp / 155.1 kW
★ Baseline Reference
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