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About the International Harvester 644

International Harvester started producing the 644 Tractor in 1974 and continued until 1980. Sometimes, the parts compatibility is determined by the serial number of your International Harvester 644 Tractor, and that info should be listed on the part fit notes. The 3-point hitch is very reliable, capable to lift 6394 lbs [2900 kg]. It is also worth noting that the PTO runs at 540 rpms.

Parts for International Harvester 644 Tractor

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Cooling System

Engine Parts


Front Axle/Steering Parts

Fuel System

Hitch & Drawbar Parts

Hydraulic System

Ignition & Electrical Parts

Instrument Panels, Gauges & Related Parts

PTO Components

PTO and Related Parts

Rims & Wheels

Transmission & Rear Axle