• WhichTractor size: High-power
  • No lab test on file
  • 1978–1981
  • 642 built

WhichTractor size, not the maker’s category

Derived by WhichTractor from a sourced three-point linkage. How we decide what a machine is

International Harvester 6588 specs: hp, weight, years

INTERNATIONAL HARVESTER DT-466 B six-cylinder diesel. The manufacturer claimed 149.9 horsepower. No laboratory has tested one, so there is no measured figure at the shaft.

Engine power, claimed · gross or net not stated

149.9 hp

111.8 kW as stated by the source

No lab test on file

Claimed · standard not stated by the source

Source · Traktorenlexikon, “IHC 6588”, 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.

Weight
17,619 lb
3-point lift
8,598 lb
Hyd. flow
18.0 gpm
Top speed
18.6 mph

International Harvester 6588 specs: key facts

  • The International Harvester 6588 was built from 1978 to 1981.

  • The International Harvester 6588 has a claimed engine power (gross or net not stated) of 111.8 kW (149.9 hp); it has no measured PTO figure.

  • The International Harvester 6588 is four-wheel drive (4WD).

  • The International Harvester 6588 has a INTERNATIONAL HARVESTER DT-466 B engine, a 6-cylinder 7.64 L diesel unit.Source 1

  • The International Harvester 6588 weighs 7,992 kg (17,619 lb) unladen.

  • The International Harvester 6588 has a rear PTO running at 540/1000 rpm.

  • The three-point hitch of the International Harvester 6588 lifts 3,900 kg (8,598 lb) at the lower-link ends.

  • The hydraulic pump of the International Harvester 6588 delivers 68.1 L/min (18.0 gpm).

Source · Traktorenlexikon, “IHC 6588”

How does the 6588 compare with its class?

  • Worth knowing:

    An unladen mass of 7,992 kg is high for its class — 29% above the median of 6,185 kg across the 207 machines within 10% of its power that hold this figure.

  • Limitation:

    The power figure is a manufacturer claim, not a measurement. No laboratory test report exists for this machine. Of the 207 tractors within 10% of its power, 10% carry one.

Derived by WhichTractor from 207 comparable records. How we work this out

International Harvester 6588 tractor
Photo: Acroterion, CC BY-SA 4.0 via Wikimedia Commons · Wrong photo?

How much horsepower does a 6588 have?

The only figure for the 6588 is 149.9 hp (111.8 kW) of claimed engine power, gross or net not stated, no test standard stated — not power at the shaft.

Engine, claimed (gross/net not stated)
149.9 hp

Source · Traktorenlexikon, “IHC 6588”

What engine is in a 6588?

A 6588 has an INTERNATIONAL HARVESTER DT-466 B, a 6-cylinder 7.64 L diesel engine.

Engine — 6588 engine specifications
Make & modelINTERNATIONAL HARVESTER DT-466 B
Cylinders6, liquid-cooledSource 2
Displacement466.2 ci · 7.64 L
Max torque450 lb·ft · 610 N·m @ 1,800 rpmSource 2
Electrical system12 VSource 2

Source · Traktorenlexikon, “IHC 3588”

How much will a 6588 lift, and what is its hydraulic flow?

A 6588 lifts 8,598 lb (3,900 kg) at the lower-link ends.

Hydraulics & PTO — 6588 hydraulics and PTO specifications
Pump flow18.0 gpm · 68.1 L/min
Lift at ends8,598 lb · 3,900 kg
Rear PTO540/1000 rpm @ 2,106 engine rpm

Source · Traktorenlexikon, “IHC 6588”

What transmission does a 6588 have?

Transmission specifications for the 6588 are below.

Transmission — 6588 transmission specifications
SteeringHydraulic steering and adjustable steering wheel
Top speed18.6 mph · 30 km/h

Source · Traktorenlexikon, “IHC 6588”

How much does a 6588 weigh?

A 6588 weighs 17,619 lb (7,992 kg) unladen.

Weights & dimensions — 6588 weights and dimensions
Unladen weight17,619 lb · 7,992 kg
Wheelbase110.0 in · 2,794 mm
Length228.3 in · 5,799 mm
Width101.6 in · 2,581 mm
Height115.8 in · 2,941 mm
Ground clearance28.4 in · 721 mm
Front track59.8–104.0 in · 1,519–2,642 mmWikibooks gives one track for both axles
Rear track59.8–104.0 in · 1,519–2,642 mmWikibooks gives one track for both axles

Source · Traktorenlexikon, “IHC 6588”

What oil does a 6588 take, and how much?

A 6588 engine takes 20.0 qt (18.9 L). Single source, not independently verified — always confirm against the operator’s manual for your machine.

6588 fluid capacities, grades and service intervals
SystemCapacity
Engine oil20.0 qt · 18.9 LSource: Traktorenlexikon, “IHC 6588” · single source, not independently verified
Transmission & hydraulic94.5 qt · 89.4 LSource: Traktorenlexikon, “IHC 6588” · single source, not independently verified
Cooling system34.0 qt · 32.2 LSource: Traktorenlexikon, “IHC 6588” · single source, not independently verified

Always confirm against the operator’s manual for your machine before service.

Which tractors compare with a 6588?

Within 10% of its 152.1 hp at the PTO as the maker claimed it, with no laboratory test on file, the same type, and first built within 15 years of it.

Common questions about the International Harvester 6588

Is a 6588 two-wheel drive or four-wheel drive?

The International Harvester 6588 is four-wheel drive (4WD).

What PTO does a 6588 have?

A 6588 has a 540/1000 rpm rear PTO.

Sources and how this page was built

Compiled from Traktorenlexikon, “IHC 3588”; and Traktorenlexikon, “IHC 6588”.

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 3588 — CC BY-SA 4.0, WIKIBOOKS-TL-119176 · revision 1037669. Wikibooks contributors (Traktorenlexikon). Original document
  2. Traktorenlexikon: IHC 6588 — CC BY-SA 4.0, WIKIBOOKS-TL-119179 · revision 1055431. Wikibooks contributors (Traktorenlexikon). Original document