The Valentine IV was powered by a G.M.C. diesel engine, in place of the A.E.C. model used on the Mk II, but was otherwise similar to the earlier model.
The original Valentine I had been powered by a petrol engine, but on the Mk II that had been replaced by a 131hp A.E.C. engine. On the Mk IV that was replaced by a 138hp G.M.C. 6-71 diesel engine. This was a six-cylinder two-stroke diesel engine, with a good reputation for reliability and low engine noise. The transmission was a Spicer synchromesh gearbox with five forward speeds.
It retained the original two-man turret of the Mk I and Mk II, and the 2-pounder gun and coaxial Besa machine gun.
The Mk II and Mk IV entered combat in November 1942 with 8th RTR during Operation Crusader in North Africa.
Hull Length: 5m 41cm/ 17ft 9in
Hull Width: 2m 63cm/ 8ft 7.5in
Height: 2m 27cm/ 7ft 5.5in
Weight: 16,500kg/ 16.2 tons
Engine: 138hp GMC 6-71 Model 6004
Max Speed on road: 24km/h/ 15mph
Max Speed off road: 18km/h / 11mph
Max Range: 176km/ 109 miles
Armament: QF 2-pounder Mk IX, 7.92mm Besa machine gun
Turret front: 65mm
Turret sides: 60mm
Nose: 60mm at 21 degrees
Glacis plate: 30mm at 68 degrees
Hull sides: 60mm vertical