WhichTractor
  • Rigid chassis
  • WhichTractor size: Utility
  • No lab test on file
  • 1980–1989
  • 1,735 built

It was ranked on an engine power figure whose source does not say gross or net. WhichTractor size, not the maker’s category

International Harvester 743 Engine specs

13 engine values on record for the 743.

Engine power, claimed · gross or net not stated

66 hp

49 kW as stated by the source

No lab test on file

Claimed · standard not stated by the source

Source · Traktorenlexikon, “IHC 743”, claimed

This is the maker’s own figure, measured at the engine. Power at the PTO is lower — by how much, for this machine, nobody has measured.

What engine is in a 743?

A 743 has a IH D-239, a 4-cylinder 3.91 L diesel engine.

Engine — IH D-239 specifications
Make & modelIH D-239
FuelDiesel
Cylinders4
Displacement238.7 ci · 3.91 L
CoolingLiquid-cooled
Fuel injectionDirect injection method
Maximum torque166 lb·ft · 225 N·m
Maximum torque speed1,598 rpm
Air cleanerDry air filter with pre-separator
Cylinders4
Displacement4.1 qt · 3.9 L
Bore3.9 in · 98.4 mm
Stroke5.1 in · 128.5 mm
Rated engine speed2,300 rpm
Torque rise16 %

Source · Traktorenlexikon, “IHC 743”

Sources and how this page was built

13 engine values from Traktorenlexikon, “IHC 743”.

Sources checked

14 SEP 2026

Spotted an error?

Sources

Facts taken from these documents, units converted. Numbers beside a figure refer to this list. Licences and attribution

  1. Traktorenlexikon: IHC 743 — CC BY-SA 4.0, WIKIBOOKS-TL-53516 · revision 887174. Wikibooks contributors (Traktorenlexikon). Original document