after its introduction in 1962, the M51 proceeded produce the core of Israeli Defense Forces armored products, succeeding the M1 and M50. Many M51s used the cast hull M4A1 Sherman as a base, creating a long caliber 105mm gun in a cast turret that has been extended rearwards allowing for the gun. Operating on a 460hp diesel and making use of horizontal volute springtime suspension system system (HVSS) with wide songs, it could offer exemplary freedom. The Six Day War of 1967 saw the M51's combat first.