WhichTractor
  • Rigid chassis
  • WhichTractor size: Standard-size
  • No lab test on file
  • 1977–1980

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

Renault 921-4 specs: hp, weight, years

MWM D 227-6 six-cylinder diesel. The manufacturer claimed 90.8 horsepower. No laboratory has tested one, so there is no measured figure at the shaft.

Engine power, claimed · gross or net not stated

90.8 hp

67.7 kW as stated by the source

No lab test on file

Claimed · standard not stated by the source

Source · Traktorenlexikon, “Renault 921-4 R7684”, 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
10,847 lb
3-point lift
10,119 lb
Hyd. flow
8.6 gpm
Top speed
15.5 mph

Renault 921-4 specs: key facts

  • The Renault 921-4 was built from 1977 to 1980.

  • The Renault 921-4 has a claimed engine power (gross or net not stated) of 67.7 kW (90.8 hp); it has no measured PTO figure.

  • The Renault 921-4 is four-wheel drive (4WD).

  • The Renault 921-4 has a MWM D 227-6 engine, a 6-cylinder 5.66 L diesel unit.Source 1

  • The Renault 921-4 weighs 4,920 kg (10,847 lb) unladen.

  • The Renault 921-4 has a rear PTO running at 540/1000 rpm.

  • The three-point hitch of the Renault 921-4 lifts 4,590 kg (10,119 lb) at the lower-link ends.

  • The hydraulic pump of the Renault 921-4 delivers 32.6 L/min (8.6 gpm).

Source · Traktorenlexikon, “Renault 921-4 R7684”

How does the 921-4 compare with its class?

  • Limitation:

    A hydraulic pump flow of 32.6 L/min is low for its class — 34% below the median of 49.2 L/min across the 315 machines within 10% of its power that hold this figure.

  • Strength:

    A 205 L fuel tank is high for its class — 64% above the median of 125 L across the 370 machines within 10% of its power that hold this figure.

  • Worth knowing:

    An unladen mass of 4,920 kg is high for its class — 28% above the median of 3,855 kg across the 391 machines within 10% of its power that hold this figure.

Derived by WhichTractor from 391 comparable records. How we work this out

Illustration of the 1977–1980 Renault 921-4, a 91 hp farm tractor, a drawing generated from its specification record
Illustration — not a photograph

How much horsepower does a 921-4 have?

The only figure for the 921-4 is 90.8 hp (67.7 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)
90.8 hp

Source · Traktorenlexikon, “Renault 921-4 R7684”

What engine is in a 921-4?

A 921-4 has an MWM D 227-6, a 6-cylinder 5.66 L diesel engine.

Engine — 921-4 engine specifications
Make & modelMWM D 227-6Source 1
Cylinders6, liquid-cooledSource 1
Displacement345.2 ci · 5.66 LSource 1
Max torque249 lb·ft · 337 N·m @ 1,100 rpm
InjectionDirect injection method
Electrical system12 V

Source · Traktorenlexikon, “Renault 921-4 R7684”

How much will a 921-4 lift, and what is its hydraulic flow?

A 921-4 lifts 10,119 lb (4,590 kg) at the lower-link ends.

Hydraulics & PTO — 921-4 hydraulics and PTO specifications
Pump flow8.6 gpm · 32.6 L/min
Pressure2,321 psi · 160 bar
Lift at ends10,119 lb · 4,590 kg
Rear PTO540/1000 rpm @ 1,980 engine rpm
PTO shaft1 3/8"- 6 splines

Source · Traktorenlexikon, “Renault 921-4 R7684”

What transmission does a 921-4 have?

Transmission specifications for the 921-4 are below.

Transmission — 921-4 transmission specifications
ClutchDry LuK double clutch type 310/310 G
BrakesPedal-operated Girling expansion disc brake acting on half axles
SteeringHydrostatic Danfoss steering
Top speed15.5 mph · 25 km/h

Source · Traktorenlexikon, “Renault 921-4 R7684”

How much does a 921-4 weigh?

A 921-4 weighs 10,847 lb (4,920 kg) unladen.

Weights & dimensions — 921-4 weights and dimensions
Unladen weight10,847 lb · 4,920 kg
Maximum permissible mass17,637 lb · 8,000 kg
Wheelbase105.6 in · 2,683 mm
Length174.9 in · 4,442 mm
Width77.2 in · 1,960 mm
Height108.9 in · 2,765 mm
Ground clearance16.9 in · 430 mm
Front track63.0–78.7 in · 1,600–2,000 mmthe article lists alternatives
Rear track59.1–78.7 in · 1,500–2,000 mm
Turning radius, braked15.6 ft · 4.75 m

Source · Traktorenlexikon, “Renault 921-4 R7684”

What oil does a 921-4 take, and how much?

A 921-4 engine takes 15.6 qt (14.75 L). Single source, not independently verified — always confirm against the operator’s manual for your machine.

921-4 fluid capacities, grades and service intervals
SystemCapacity
Engine oil15.6 qt · 14.75 LSource: Traktorenlexikon, “Renault 921-4 R7684” · single source, not independently verified
Transmission & hydraulic61.3 qt · 58.0 LSource: Traktorenlexikon, “Renault 921-4 R7684” · single source, not independently verified
Cooling system16.9 qt · 16.0 LSource: Traktorenlexikon, “Renault 921-4 R7684” · single source, not independently verified

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

Which tractors compare with a 921-4?

Within 10% of its 90.8 hp of claimed engine power, the same type, and first built within 15 years of it.

Common questions about the Renault 921-4

Is a 921-4 two-wheel drive or four-wheel drive?

The Renault 921-4 is four-wheel drive (4WD).

What PTO does a 921-4 have?

A 921-4 has a 540/1000 rpm rear PTO on a 1 3/8"- 6 splines shaft.

Sources and how this page was built

Compiled from Traktorenlexikon, “Renault 891 R7681”; and Traktorenlexikon, “Renault 921-4 R7684”.

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: Renault 891 R7681 — CC BY-SA 4.0, WIKIBOOKS-TL-109178 · revision 993364. Wikibooks contributors (Traktorenlexikon). Original document
  2. Traktorenlexikon: Renault 921-4 R7684 — CC BY-SA 4.0, WIKIBOOKS-TL-109181 · revision 993366. Wikibooks contributors (Traktorenlexikon). Original document