• Rigid chassis
  • WhichTractor size: Utility
  • No lab test on file
  • 1971–1976
  • 18,540 built

WhichTractor size, not the maker’s category

David Brown 990 (A) (also listed as 900 Synchromesh) Engine specs

11 engine values on record for the 990 (A).

Engine power, claimed · gross or net not stated

57.3 hp

42.7 kW as stated by the source

No lab test on file

Claimed · standard not stated by the source

Source · Traktorenlexikon, “David Brown 900 Synchromesh”, 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 990 (A)?

A 990 (A) has a DAVID BROWN AD 4/49, a 4-cylinder 3.19 L diesel engine.

Engine — DAVID BROWN AD 4/49 specifications
Make & modelDAVID BROWN AD 4/49
FuelDiesel
Cylinders4
Displacement194.9 ci · 3.19 L
CoolingLiquid-cooled
Maximum torque152 lb·ft · 206 N·m
Maximum torque speed1,400 rpm
Air cleanerOil bath air filter
Cylinders4
Displacement3.4 qt · 3.2 L
Bore3.9 in · 100.1 mm
Stroke4.0 in · 101.6 mm
Rated engine speed2,200 rpm

Source · Traktorenlexikon, “David Brown 900 Synchromesh”

Sources and how this page was built

11 engine values from Traktorenlexikon, “David Brown 900 Synchromesh”.

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: David Brown 900 Synchromesh — CC BY-SA 4.0, WIKIBOOKS-TL-115991 · revision 990952. Wikibooks contributors (Traktorenlexikon). Original document