International Harvester 4166
The International Harvester 4166 is a tractor produced by International Harvester. It is equipped with a 436 ci 7.1 L engine. The listed engine power is Diesel (listed): 175 hp / 130.5 kW. Transmission: 8 forward and 4 reverse. Drive type: 4x4 4WD. Operating weight: 15900 lbs 7212 kg.
Engine Power
Diesel (listed): 175 hp / 130.5 kW
Drive & Traction
4x4 4WD
Fuel & Capacities
100 gal
378.5 L
Transmission
8 forward and 4 reverse
Operating Weight
15900 lbs
7212 kg
Overview
 | 1972 - 1976
66 SeriesFour-wheel Drive (4WD) tractor
66 Series
Four-wheel Drive (4WD) tractor |
|---|
Production | |
|---|---|
Manufacturer | International Harvester |
Four-wheel Drive (4WD) tractor | |
Original price was $29,900 in 1976 | |
International Harvester 4166 Engine | |
|---|---|
International Harvester 7.1L 6-cyl diesel | |
Fuel tank | 100 gal
378.5 L |
Engine details ...  | |
International Harvester 4166 Transmission | |
|---|---|
8-speed sliding gear | |
Transmission details ...  |
International Harvester 4166 Power | |
|---|---|
Engine | 175 hp
130.5 kW |
Drawbar (tested) | 127.55 hp
95.1 kW |
PTO (tested) | 150.63 hp
112.3 kW |
Performance test details ...  | |
Mechanical | |
|---|---|
Drive | 4x4 4WD |
Final drives | planetary |
Steering | hydraulic power |
Hydraulic expanding shoe brakes | |
Cab optional with available heat and air-conditioning. | |
Hydraulics | |
|---|---|
Type | open center |
Valves | 3 OptOptional |
Pump flow | 16.5 gpm
62.5 lpm |
Tractor hitch | |
|---|---|
Rear Type | III |
Rear lift (at ends) | 6000 lbs
2721 kg |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Rear PTO Type | 1000 |
Dimensions & Tires | |
|---|---|
Wheelbase | 102 inches
259 cm |
Weight | 15300 to 15900 pounds |
Front tire | 23.1-26 |
Rear tire | 23.1-26 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Charging system | alternator |
Charging amps | 72 |
Batteries | 2 |
Battery volts | 6 |
References | |
|---|---|
 | |
Farm Equipment Reference Catalog published in 1971, by International Harvester |
Engine
Engine Detail — 436 ci / 7.1 L Diesel
Manufacturer | International Harvester DT-436 |
Configuration | turbocharged diesel, 6-cylinder, liquid-cooled |
Displacement | 436 ci
7.1 L |
Bore/Stroke | 4.30x5.00 inches
109 x 127 mm |
Power | 175 hp
130.5 kW |
Fuel system | direct injection |
Compression | 16:1 |
Rated RPM | 2400 |
Starter volts | 12 |
Oil capacity | 18 qts
17.0 L |
Coolant capacity | 32 qts
30.3 L |
Transmission
Transmission — 8 forward and 4 reverse sliding gear
Type | sliding gear |
Gears | 8 forward and 4 reverse |
Clutch | dry disc |
 | |
Dimensions
International Harvester 4166 Tires | |
|---|---|
Ag front | 23.1-26 |
Ag rear | 23.1-26 |
Dimensions | |
|---|---|
Wheelbase | 102 inches
259 cm |
Length | 194 inches
492 cm |
Width | 103 inches
261 cm |
Height (steering wheel) | 93 inches
236 cm |
Height (exhaust) | 138 inches
350 cm |
Weight | 15900 lbs
7212 kg |
Shipping weight | 15300 lbs
6940 kg |
Ground clearance | 17 inches
43 cm |
Front tread | 80 inches
203 cm |
Rear tread | 80 inches
203 cm |
Tests
Nebraska Tractor Test 1116 | |
|---|---|
Diesel 8-speed 4WD
November 1 - December 6, 1972
Link: Nebraska Tractor Test 1116 file | |
PTO performance | |
Power at rated engine speed | 150.63 hp
112.3 kW |
Fuel use | 9.9 gal/hour
37.5 l/hour |
Power at rated PTO speed | 152.72 hp
113.9 kW |
Fuel use | 9.1 gal/hour
34.4 l/hour |
Drawbar performance | |
Max power | 127.55 hp
95.1 kW |
Gear 4-Low used for power test. | |
Max pull | 19,434 lbs
8815 kg |
Gear 1-Low used for pull test. | |
Photos
International 4166 right-front view
Rear view of the IH 4166
Recommended Implements & Sizing Guide
Engineering recommendations for International Harvester 4166 based on its 175 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 5 to 7 Bottom (18")5 - 7 铧 (45 cm) | Commercial / Field Scale | Large acreage tillage; requires front ballast weights. |
Rotary Cutter / MowerMowing & Clearing | 15 to 20 ft Batwing4.6 - 6.1 m 宽幅折叠翼 | Commercial / Field Scale | Large commercial field and roadside mowing operations. |
Rotary TillerSeedbed Prep | 90 to 120 in Heavy Duty230 - 300 cm 重型旋耕机 | Commercial / Field Scale | Deep intensive seedbed preparation for commercial row crops. |
Disc HarrowSecondary Tillage | 15 to 22 ft Folding Disc4.5 - 6.7 m 折叠式圆盘耙 | Commercial / Field Scale | Wide commercial field leveling; requires hydraulic remotes. |
Hay BalerHay & Forage | Large Square Baler (3x4 or 4x4)大方捆商用打捆机 (1.2x1.2 m) | Commercial / Field Scale | High-capacity commercial forage harvesting (1000 RPM PTO). |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for International Harvester 4166.
Estimated Continuous Field Runtime: 11 hrs
Approximately 11 hours of continuous field operation at ~75% rated power on a full tank (100 gal / 378.5 L).
Estimated 75% Load Fuel Burn~9.1 gal/hr (34.4 L/hr)
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
International Harvester 4166 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for International Harvester 4166.
Converted Equivalents:
Horsepower (HP)175 hp
Kilowatts (kW)130.5 kW
Metric Horsepower (PS / CV)177.4 PS
Direct Competitor Comparison
Compare International Harvester 4166 against same-era industry alternatives in the same horsepower class.
Current Model
International Harvester
International Harvester 4166
Engine Power:Diesel (listed): 175 hp / 130.5 kW
★ Baseline Reference
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