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 rated power output is 200 hp 149.1 kW. Transmission: John Deere PowerShift. Drive type: crawler. Operating weight: 25,950 lbs 11770 kg.
Engine Power
200 hp
149.1 kW
Drive & Traction
crawler
Fuel & Capacities
130 gal
492.1 L
Transmission
John Deere PowerShift
Operating Weight
25,950 lbs
11770 kg
John Deere 8120T Serial Number & Year Decoder
Find the exact manufacture year of your tractor by checking your chassis serial number below.
Where to Find the Serial NumberThe serial number plate is commonly located on the front frame, tractor transmission housing (right side), or instrument panel badge.
Overview
![]() | 2002 - 2005
8020 SeriesAgricultural Crawler tractor |
|---|---|
2002 - 2005 | |
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 |
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