International Harvester 4166
Power
175 hp
Production
1972-1976
Engine
Turbocharged diesel, 6-cylinder
Transmission
Sliding gear
Weight
15300 lbs [6940 kg]
Drive
4WD
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Introduction
International Harvester 4166: High-Capacity 4WD Tractor
The International Harvester 4166 is a heavy-duty four-wheel-drive tractor produced between 1972 and 1976. Designed for large-scale agricultural operations, this machine emphasizes power and traction through its 4x4 drivetrain and robust mechanical architecture.
Engine and Performance
The tractor is powered by the International Harvester DT-436, a 7.1-liter, 6-cylinder turbocharged diesel engine. It features direct injection and a 16:1 compression ratio, generating 175 horsepower at a rated 2400 RPM. This liquid-cooled engine is engineered for sustained high-torque output required for deep tillage and heavy pulling tasks.
Transmission and Drivetrain
Power is transferred to the wheels via a sliding gear transmission providing 8 forward and 4 reverse speeds. The drivetrain utilizes a dry disc clutch and planetary final drives, ensuring durable power delivery to all four wheels. Hydraulic power steering assists the operator in maneuvering the 7,212 kg machine.
Hydraulics and PTO
The 4166 is equipped with an open-center hydraulic system delivering a pump flow of 16.5 gpm (62.5 lpm). The rear implements are managed by a Category III three-point hitch with a lift capacity of 6,000 lbs (2,721 kg) at the ends. The independent rear PTO operates at a standard 1000 RPM, allowing for the efficient operation of high-demand power-take-off implements.
Operator Environment and Dimensions
The tractor features a wheelbase of 102 inches and a width of 103 inches, providing a stable footprint for field operations. An optional factory cab was available, offering heating and air conditioning to maintain operator comfort during long work intervals. The unit stands 138 inches high at the exhaust, with a ground clearance of 17 inches.
Conclusion
The International Harvester 4166 is a specialized 4WD tractor suited for demanding field work where high draft capacity and consistent power are required. Its mechanical simplicity and robust construction make it a notable piece of mid-1970s agricultural machinery.
Production Information of International Harvester, 4166
- Four-wheel Drive (4WD) tractor
- Original price was $29,900 in 1976
| Manufacturer | International Harvester |
|---|
Dimension and Tires Information of International Harvester, 4166
| Shipping weight | 15300 lbs [6940 kg] |
|---|---|
| Wheelbase | 102 inches [259 cm] |
| Height (exhaust) | 138 inches [350 cm] |
| Height (steering wheel) | 93 inches [236 cm] |
| Length | 194 inches [492 cm] |
| Ground clearance | 17 inches [43 cm] |
| Weight | 15900 lbs [7212 kg] |
| Width | 103 inches [261 cm] |
| Rear tread | 80 inches [203 cm] |
| Front tread | 80 inches [203 cm] |
| Ag front | 23.1-26 |
|---|---|
| Ag rear | 23.1-26 |
Engine Specifications of International Harvester, 4166
- International Harvester DT-436
- Liquid-cooled
- Turbocharged diesel
- 6-cylinder
| Starter volts | 12 |
|---|---|
| Displacement | 436 ci [7.1 L] |
| Fuel system | Direct injection |
| Bore/Stroke | 4.30x5.00 inches [109 x 127 mm] |
| Coolant capacity | 32 qts [30.3 L] |
| Oil capacity | 18 qts [17.0 L] |
| Rated RPM | 2400 |
| Compression | 16:1 |
| Power | 175 hp [130.5 kW] |
Transmission Information of International Harvester, 4166
Transmission variants 1
| Type | Sliding gear |
|---|---|
| Gears | 8 forward and 4 reverse |
| Clutch | Dry disc |
Mechanical Specs of International Harvester, 4166
- Cab optional with available heat and air-conditioning.
- Hydraulic expanding shoe brakes
| Drive | 4x4 4WD |
|---|---|
| Final drives | Planetary |
| Steering | Hydraulic power |
Power Information of International Harvester, 4166
| Rear PTO | Independent |
|---|---|
| Rear PTO Type | 1000 |
Hydraulics Specifications of International Harvester, 4166
| Type | Open center |
|---|---|
| Valves(optional) | 3 |
| Pump flow | 16.5 gpm [62.5 lpm] |
Three-Point Hitch of International Harvester, 4166
| Rear Type | III |
|---|---|
| Rear lift (at ends) | 6000 lbs [2721 kg] |
Electrical System of International Harvester, 4166
| Charging system | Alternator |
|---|---|
| Battery volts | 6 |
| Charging amps | 72 |
| Batteries | 2 |
Where it sits
With 175 HP, the International Harvester 4166 sits between 4186 (166 HP) and 4366 (225 HP) in International Harvester's range. Its power puts it in the 87th percentile of 1970s models in our database (1259 machines).
Frequently asked questions
How much horsepower does the International Harvester 4166 have?
The International Harvester 4166 delivers 175 HP.
What years was the International Harvester 4166 produced?
The International Harvester 4166 was produced in 1972-1976.
What engine does the International Harvester 4166 have?
The International Harvester 4166 is powered by a Turbocharged diesel, 6-cylinder engine.
What transmission does the International Harvester 4166 use?
The International Harvester 4166 uses a Sliding gear transmission.
How much does the International Harvester 4166 weigh?
The International Harvester 4166 weighs 15300 lbs [6940 kg].
Is the International Harvester 4166 4WD?
The International Harvester 4166 is available in 4WD.