• 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

Renault 921 Engine specs

12 engine values on record for the 921.

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 R7681”, 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 921?

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

Engine — MWM D 227-6 specifications
Make & modelMWM D 227-6Source 1
FuelDieselSource 1
Cylinders6Source 1
Displacement345.2 ci · 5.66 LSource 1
CoolingLiquid-cooled
Fuel injectionDirect injection
Maximum torque249 lb·ft · 337 N·m
Maximum torque speed1,100 rpm
Air cleanerMann & Hummel oil bath air cleaner with cyclone separator
Cylinders6
Displacement6.0 qt · 5.7 L
Bore3.9 in · 100 mm
Stroke4.7 in · 120 mm
Rated engine speed2,350 rpm

Source · Traktorenlexikon, “Renault 921 R7681”

Sources and how this page was built

12 engine values from Traktorenlexikon, “Renault 891 R7681”; and Traktorenlexikon, “Renault 921 R7681”.

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 R7681 — CC BY-SA 4.0, WIKIBOOKS-TL-109180 · revision 993365. Wikibooks contributors (Traktorenlexikon). Original document