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International Harvester 666

International Harvester 666 tractor photo
1972 - 1976
Previous model:International Harvester 656
Next model:International Harvester 686

Torque amplifier was an option. In 1973, the hydrostatic version of the 666 was renamed the 70 Hydro.


Manufacturer:International Harvester
Total built:9,367
Original price (USD):$11,875

International Harvester 666 Engines:

   International Harvester 5.1L 6-cyl diesel
   International Harvester 4.8L 6-cyl gasoline
full engine details ...



Rear Hitch:

Type:IH Fast Hitch

3-Point Hitch:

Rear Type:II

Power Take-off (PTO):

Rear PTO:independent
Rear RPM:540

Dimensions & Tires:

Wheelbase:103 inches [261 cm]
Weight:7053 lbs [3199 kg]
Front tire:7.50-16
Rear tire:15.5-38
full dimensions and tires ...

666 Serial Numbers:

Location:Clutch housing, right side
1972: 7500
1973: 8200
1974: 11585
1975: 13131
1976: 15739

how to read serial numbers...


International Harvester 666 Power:

Drawbar (tested):58.01 hp [43.3 kW]
PTO (tested):69.61 hp [51.9 kW]
power test details ...


Chassis:4x2 2WD
Steering:hydrostatic power
Brakes:dry disc
Cab:Open operator station. Two-post ROPS or canpoy optional.



Page information:

Last update:September 26, 2012
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