WhichTractor
  • Rigid chassis
  • WhichTractor size: Utility
  • No lab test on file
  • 1984–1991

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

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

Fiat 80-66 S (DT) specs: hp, weight, years

FIAT-IVECO 8045.05.206 or 306 four-cylinder diesel. The manufacturer claimed 79.0 horsepower. No laboratory has tested one, so there is no measured figure at the shaft.

Engine power, claimed · gross or net not stated

79.0 hp

58.9 kW as stated by the source

No lab test on file

Claimed · standard not stated by the source

Source · Traktorenlexikon, “Fiat 80-66/80-66 DT”, 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
6,173 lb
3-point lift
7,055 lb
Hyd. flow
8.7 gpm
Top speed
18.6 mph

Fiat 80-66 S (DT) specs: key facts

  • The Fiat 80-66 S (DT) was built from 1984 to 1991.

  • The Fiat 80-66 S (DT) has a claimed engine power (gross or net not stated) of 58.9 kW (79.0 hp); it has no measured PTO figure.

  • The Fiat 80-66 S (DT) was offered in two-wheel-drive and four-wheel-drive versions.

  • The Fiat 80-66 S (DT) has a FIAT-IVECO 8045.05.206 or 306 engine, a 4-cylinder 3.91 L diesel unit.

  • The Fiat 80-66 S (DT) weighs 2,800 kg (6,173 lb) unladen.

  • The Fiat 80-66 S (DT) has an independent rear PTO running at 540/1000 rpm.

  • The three-point hitch of the Fiat 80-66 S (DT) lifts 3,200 kg (7,055 lb) at the lower-link ends.

  • The hydraulic pump of the Fiat 80-66 S (DT) delivers 32.8 L/min (8.7 gpm).

Source · Traktorenlexikon, “Fiat 80-66/80-66 DT”

Illustration of the 1984–1991 Fiat 80-66 S (DT), a 79 hp farm tractor, four-wheel-drive version, a drawing generated from its specification record
Illustration — not a photograph · four-wheel-drive version

How much horsepower does an 80-66 S (DT) have?

The only figure for the 80-66 S (DT) is 79.0 hp (58.9 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)
79.0 hp

Source · Traktorenlexikon, “Fiat 80-66/80-66 DT”

What engine is in an 80-66 S (DT)?

An 80-66 S (DT) has a FIAT-IVECO 8045.05.206 or 306, a 4-cylinder 3.91 L diesel engine.

Engine — 80-66 S (DT) engine specifications
Make & modelFIAT-IVECO 8045.05.206 or 306
Cylinders4, liquid-cooled
Displacement238.5 ci · 3.91 L
Max torque185 lb·ft · 251 N·m @ 1,200 rpm
InjectionDirect injection
Electrical system12 V

Source · Traktorenlexikon, “Fiat 80-66/80-66 DT”

How much will an 80-66 S (DT) lift, and what is its hydraulic flow?

An 80-66 S (DT) lifts 7,055 lb (3,200 kg) at the lower-link ends.

Hydraulics & PTO — 80-66 S (DT) hydraulics and PTO specifications
Pump flow8.7 gpm · 32.8 L/min
Pressure3,046 psi · 210 bar
Lift at ends7,055 lb · 3,200 kg
Rear PTOIndependent, engine-driven, 540/1000 rpm @ 2,199 engine rpmEngages under loadGround-speed PTO available
PTO shaft1 3/8"- 6 splines or 1 3/8"- 21 parts

Source · Traktorenlexikon, “Fiat 80-66/80-66 DT”

What transmission does an 80-66 S (DT) have?

Transmission specifications for the 80-66 S (DT) are below.

Transmission — 80-66 S (DT) transmission specifications
ClutchDry double clutch
BrakesPedal operated hydraulic wet disc brake
SteeringHydrostatic steering
Top speed18.6 mph · 30 km/h

Source · Traktorenlexikon, “Fiat 80-66/80-66 DT”

How much does an 80-66 S (DT) weigh?

An 80-66 S (DT) weighs 6,173 lb (2,800 kg) unladen.

Weights & dimensions — 80-66 S (DT) weights and dimensions
Unladen weight6,173 lb · 2,800 kgDT: 3,130
Maximum permissible mass10,141 lb · 4,600 kg
Wheelbase90.7 in · 2,305 mmDT: 2,249
Length139.4 in · 3,540 mmDT: 3,620
Width95.3 in · 2,420 mm
Height99.4 in · 2,525 mm
Ground clearance22.6 in · 575 mmDT: 425
Front track55.5–75.2 in · 1,410–1,910 mmDT: 1,630-1,960
Rear track59.1–78.7 in · 1,500–2,000 mm
Turning radius, braked12.0 ft · 3.65 mDT: 4,480

Source · Traktorenlexikon, “Fiat 80-66/80-66 DT”

What oil does an 80-66 S (DT) take, and how much?

An 80-66 S (DT) engine takes 12.4 qt (11.7 L). Single source, not independently verified — always confirm against the operator’s manual for your machine.

80-66 S (DT) fluid capacities, grades and service intervals
SystemCapacity
Engine oil12.4 qt · 11.7 LSource: Traktorenlexikon, “Fiat 80-66/80-66 DT” · single source, not independently verified
Transmission & hydraulic49.3 qt · 46.7 LSource: Traktorenlexikon, “Fiat 80-66/80-66 DT” · single source, not independently verified
Cooling system14.8 qt · 14.0 LSource: Traktorenlexikon, “Fiat 80-66/80-66 DT” · single source, not independently verified

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

Which tractors compare with an 80-66 S (DT)?

Within 10% of its 79.0 hp of claimed engine power, the same type, and first built within 15 years of it.

Common questions about the Fiat 80-66 S (DT)

Is an 80-66 S (DT) two-wheel drive or four-wheel drive?

The Fiat 80-66 S (DT) was offered in two-wheel-drive and four-wheel-drive versions.

What PTO does an 80-66 S (DT) have?

An 80-66 S (DT) has a independent 540/1000 rpm rear PTO on a 1 3/8"- 6 splines or 1 3/8"- 21 parts shaft.

Sources and how this page was built

Compiled from Traktorenlexikon, “Fiat 80-66/80-66 DT”.

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: Fiat 80-66/80-66 DT — CC BY-SA 4.0, WIKIBOOKS-TL-108667 · revision 1075604. Wikibooks contributors (Traktorenlexikon). Original document