The M4A2 Sherman is the third variant of the early-generation Medium Tank M4 (Sherman) family. In April 1942, the M4A2 was designed with a new General Motors 6046 engine (two GM 6-71 General Motors Diesel engines combined together), welded hull with increased appliqué armour on the hull sides, and gunner position (left side of the turret). Approximately 8,053 units were manufactured till May 1944.