Hesston 666
The Hesston 666 is a tractor produced by Hesston. It is equipped with a 211 ci 3.5 L engine. The rated power output is 62.40 hp 46.5 kW. Transmission: 20 forward and 8 reverse. Drive type: 4x2 2WD. Operating weight: 5689 to 6350 pounds.
Engine Power
62.40 hp
46.5 kW
Drive & Traction
4x2 2WD
Fuel & Capacities
19.2 gal
72.7 L
Transmission
20 forward and 8 reverse
Operating Weight
5,689 lbs (2WD)
2580 kg
Hesston 666 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
 | 1983 - 1984
Utility tractorFiat built |
|---|---|
1983 - 1984 | |
Utility tractor | |
Fiat built | |
1983 - 1984 | |
|---|---|
Utility tractor | |
Fiat built |
Production | |
|---|---|
Distributor | Hesston |
Manufacturer | Fiat |
Utility tractor | |
Built in Modena, Italy | |
Original price | $19,600 (1984) |
Variants | |
|---|---|
666DT | 4WD |
666HC | high-crop |
Hesston 666 Engine | |
|---|---|
Fiat 3.5L 4-cyl diesel | |
Fuel tank | 19.2 gal
72.7 L |
Engine details ...  | |
Hesston 666 Power | |
|---|---|
Drawbar (claimed) | 54.3 hp
40.5 kW |
PTO (claimed) | 62 hp
46.2 kW |
Drawbar (tested) | 53.13 hp
39.6 kW |
PTO (tested) | 62.40 hp
46.5 kW |
Performance test details ...  | |
Mechanical | |
|---|---|
Drive | 4x2 2WD |
4x4 MFWD 4WD (666DT) | |
Steering | hydrostatic power |
Differential mechanical wet disc brakes | |
Four-post ROPS standard. Optional canopy. | |
Hydraulics | |
|---|---|
Type | open center |
Pressure | 2700 psi
186.2 bar |
Valves | 1 or 2 |
Pump flow | 11 gpm
41.6 lpm |
Tractor hitch | |
|---|---|
Rear Type | I/II |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Rear PTO Type | 540 |
Dimensions & Tires | |
|---|---|
Wheelbase | 90.7 inches (2WD)
230 cm |
88.5 inches (4WD)
224 cm | |
Weight | 5689 to 6350 pounds |
Front tire | 7.50-16 |
Rear tire | 14.9-30 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Charging system | alternator |
Charging amps | 33 |
Engine
| 1983 - 1984
Utility tractorFiat built |
|---|---|
1983 - 1984 | |
Utility tractor | |
Fiat built | |
1983 - 1984 | |
|---|---|
Utility tractor | |
Fiat built |
Engine Detail — 211 ci / 3.5 L Diesel
Manufacturer | Fiat 8045.02 |
Fuel Type | Diesel |
Configuration | 4-cylinder, liquid-cooled |
Displacement | 211 ci
3.5 L |
Bore/Stroke | 3.94x4.33 inches
100 x 110 mm |
Starter volts | 12 |
Transmission
| 1983 - 1984
Utility tractorFiat built |
|---|---|
1983 - 1984 | |
Utility tractor | |
Fiat built | |
1983 - 1984 | |
|---|---|
Utility tractor | |
Fiat built |
Transmission options | |
|---|---|
12-speed synchronized | |
12-speed | |
20-speed |
Transmission — 12 forward and 4 reverse synchronized
Type | synchronized |
Gears | 12 forward and 4 reverse |
Four synchronized gears in three ranges. | |
Transmission — 12 forward and reverse
Gears | 12 forward and reverse |
Transmission — 20 forward and 8 reverse
Gears | 20 forward and 8 reverse |
Dimensions
| 1983 - 1984
Utility tractorFiat built |
|---|---|
1983 - 1984 | |
Utility tractor | |
Fiat built | |
1983 - 1984 | |
|---|---|
Utility tractor | |
Fiat built |
Hesston 666 Tires | |
|---|---|
Ag front | 7.50-16 (2WD) |
9.5-24 (4WD) | |
Ag rear | 14.9-30 |
Dimensions | |
|---|---|
Wheelbase | 90.7 inches (2WD)
230 cm |
88.5 inches (4WD)
224 cm | |
Length | 139 inches (2WD)
353 cm |
143 inches (4WD)
363 cm | |
Operating weight | 5,689 lbs (2WD)
2580 kg |
6,350 lbs (4WD)
2880 kg | |
Ground clearance | 23 inches (2WD front axle)
58 cm |
19 inches (4WD front axle)
48 cm | |
16 inches (4WD front differential)
40 cm | |
Hesston 666 Height | |
|---|---|
Hood | 59 inches
149 cm |
Exhaust | 96 inches (2WD)
243 cm |
97 inches (4WD)
246 cm | |
Tests
| 1983 - 1984
Utility tractorFiat built |
|---|---|
1983 - 1984 | |
Utility tractor | |
Fiat built | |
1983 - 1984 | |
|---|---|
Utility tractor | |
Fiat built |
Nebraska Tractor Test 1485 | |
|---|---|
Diesel 12-speed 4WD
June 6 - 17, 1983
Link: Nebraska Tractor Test 1485 file | |
PTO performance | |
Power at rated engine speed | 62.40 hp
46.5 kW |
Fuel use | 3.9 gal/hour
14.8 l/hour |
Power at rated PTO speed | 60.33 hp
45.0 kW |
Fuel use | 3.5 gal/hour
13.2 l/hour |
Drawbar performance | |
Max power | 53.13 hp
39.6 kW |
Fuel use | 3.9 gal/hour
14.8 l/hour |
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