The Achzarit is based on the Soviet-built T-54/T-55 tank, beginning with those captured from Arab armies during the Arab-Israeli wars. The IDF took the old T-55 tank and removed its turret and the chassis was modified for troop carriage by adding a troop compartment and a rear door. The original Soviet-made water-cooled diesel engine was replaced with a more compact and powerful diesel engine, and other internal systems were upgraded. Reactive armor was installed over the original armored tank chassis. The APC was created in 1988.