T-72Z/Type 72Z/Safir-74 - Iranian upgraded T-54/55 and Type-59 (Chinese copy of the T-54A), T-72Z being the name given to the upgraded T-55s, Safir 74 being the name given to the upgraded T-54s and Type 72Z being the name given to the upgraded Type-59s.
The upgrades Include the new fire control system Fotona EFCS-3B (with laser rangefinder, cross-wind sensor, ballistic computer and gunner's passive night vision device), a 105mm tank gun, side skirts, smoke grenade launchers, ERA package, a new power-pack with 780 hp 12-cylinder V-46-6 diesel engine and new tracks.
Iranian sources state there was also a plan to arm the tanks with a 2A46 125mm tank gun, but it seems as if this project was canceled.

Safir-86 - Standard T-55 fitted with an ERA kit developed by Iran.

Safir-86 with improved ERA layout.
T-72Z/Type 72Z/Safir-74 - Iranian upgraded T-54/55 and Type-59 (Chinese copy of the T-54A), T-72Z being the name given to the upgraded T-55s, Safir 74 being the name given to the upgraded T-54s and Type 72Z being the name given to the upgraded Type-59s. The upgrades Include the new fire control system Fotona EFCS-3B (with laser rangefinder, cross-wind sensor, ballistic computer and gunner's passive night vision device), a 105mm tank gun, side skirts, smoke grenade launchers, ERA package, a new power-pack with 780 hp 12-cylinder V-46-6 diesel engine and new tracks. Iranian sources state there was also a plan to arm the tanks with a 2A46 125mm tank gun, but it seems as if this project was canceled.
Safir-86 - Standard T-55 fitted with an ERA kit developed by Iran.
Safir-86 with improved ERA layout.
T-54/T-55 operators and variants