• Rigid chassis
  • WhichTractor size: Utility
  • No lab test on file
  • 1992–1997

WhichTractor size, not the maker’s category

VALMET 665 Engine specs

12 engine values on record for the 665.

Engine power, claimed · gross or net not stated

78.9 hp

58.8 kW as stated by the source

No lab test on file

Claimed · standard not stated by the source

Source · Traktorenlexikon, “Valmet 665”, 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 665?

A 665 has a VALMET 420 D, a 4-cylinder 4.40 L diesel engine.

Engine — VALMET 420 D specifications
Make & modelVALMET 420 D
FuelDiesel
Cylinders4
Displacement268.3 ci · 4.40 L
CoolingLiquid-cooled
Maximum torque214 lb·ft · 290 N·m
Maximum torque speed1,450 rpm
Air cleanerValmet dry air filter including cyclone pre-filter
Cylinders4
Displacement4.6 qt · 4.4 L
Bore4.3 in · 108 mm
Stroke4.7 in · 120 mm
Rated engine speed2,350 rpm
Torque rise21 %

Source · Traktorenlexikon, “Valmet 665”

Sources and how this page was built

12 engine values from Traktorenlexikon, “Valmet 665”.

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: Valmet 665 — CC BY-SA 4.0, WIKIBOOKS-TL-116429 · revision 998457. Wikibooks contributors (Traktorenlexikon). Original document