Tiran-1 - Virtually unmodified T-54 was in Israeli Army service.

Tiran-2 - Virtually unmodified T-55 was in Israeli Army service.

Ti-67 - a collective designation for the Israeli-upgraded T-54s and T-55s built on tanks captured in 1967 and 1973.
No longer in service in Israel but many were sold off.

Tiran-4 - Modified T-54 with original 100 mm gun.
It has two water cans fitted to the rear of the turret, new fenders, new loader's hatch that opens to the rear and a new antenna mount.
Later fitted were a rounded stowage bin on the rear of the turret, pintle-mounted .30 cal M1919A4 Browning medium machine gun in front of the loaders hatch and gas cans fitted to the front fenders.

Tiran-4Sh - upgraded Tiran-4, fitted with Sharir 105 mm gun.
It also was fitted with a newer type of antenna mount in, new infrared spotlight for the commander, an aiming system from the Sherman medium tank, fire extinguisher mounted in front of the searchlight, new headlights, centrally mounted .30 cal M1919A4 Browning medium machine gun, signal flag holders and an oil can mounted on the rear of the left fender.
It also has ammunition racks modified to suit the 105mm ammunition, new communications equipment, modified commander's seat, new gunner's seat, azimuth indicator installed, driver's hatch modified so that it can opened from the outside, coaxial machine gun replaced by a 7.62mm Browning machine gun and the cupola mounted DShK 1938/46 antiaircraft heavy machine gun replaced by a 12.7 mm Browning heavy machine gun, new fire control, night vision equipment, electrical system, air-conditioning system, antennae mounts on the rear of the turret, infantry tank-telephone on the rear of the hull, exhaust outlet angled upwards, additional track stowage and fire-extinguishing system installed.

Tiran-5 - Modified T-55 with original 100 mm gun.
It has two water cans are fitted to the rear of the turret, new fenders, a rounded stowage bin on the rear of the turret and pintle-mounted .30 cal M1919A4 Browning medium machine gun in front of the loader's hatch.
Later fitted were the .50 cal M2 heavy machine gun over the barrel of the tank gun, extra gas cans, first aid box, ring around the loader's hatch for the .30 cal, new lights similar to the ones used in the M60 Patton, a folded stretcher on the left hand side of the vehicle and an infantry tank-telephone on the rear of the hull.

Tiran-5Sh - upgraded T-55, fitted with Sharir 105 mm gun.
It also has ammunition racks modified to suit the 105mm ammunition, new communications equipment, modified commander's seat, new gunner's seat, azimuth indicator installed, driver's hatch modified so that it can opened from the outside, coaxial machine gun replaced by a 7.62mm Browning machine gun and the cupola mounted DShK 1938/46 antiaircraft heavy machine gun replaced by a 12.7 mm Browning heavy machine gun, new fire control, night vision equipment, electrical system, air-conditioning system, antennae mounts on the rear of the turret, exhaust outlet angled upwards, additional track stowage and fire-extinguishing system installed.
It is also known as T-55S.
Tiran-5Sh fitted with a dozer blade.

Ti-67 fitted with Blazer ERA.

Ti-67s - This is the Ti-67 with many other improvements in addition to all of the previous modifications.
They include fitting the American Detroit Diesel 8V-71T engine developing 609 hp, new semi-automatic hydromechanical transmission equipped with a torque converter, new air cleaners, Blazer explosive reactive armor added to the hull and turret, Cadillac-Gage-Textron gun stabilization system, installation of EL-OP Matador computerized fire control system, low-profile commander's cupola, IR detectors, Image-intensifier night vision equipment for the commander, gunner and driver, Spectronix fire detection and suppression system, new turret basket, extensive external stowage, modernized driver's station including replacement of tillers by a steering wheel, new final drives, new all-internal fuel system and improved suspension.

Achzarit - T-55 tank converted into heavy armored personnel carrier.

VT-55A
Tiran-1 - Virtually unmodified T-54 was in Israeli Army service.
Tiran-2 - Virtually unmodified T-55 was in Israeli Army service.
Ti-67 - a collective designation for the Israeli-upgraded T-54s and T-55s built on tanks captured in 1967 and 1973. No longer in service in Israel but many were sold off.
Tiran-4 - Modified T-54 with original 100 mm gun. It has two water cans fitted to the rear of the turret, new fenders, new loader's hatch that opens to the rear and a new antenna mount. Later fitted were a rounded stowage bin on the rear of the turret, pintle-mounted .30 cal M1919A4 Browning medium machine gun in front of the loaders hatch and gas cans fitted to the front fenders.
Tiran-4Sh - upgraded Tiran-4, fitted with Sharir 105 mm gun. It also was fitted with a newer type of antenna mount in, new infrared spotlight for the commander, an aiming system from the Sherman medium tank, fire extinguisher mounted in front of the searchlight, new headlights, centrally mounted .30 cal M1919A4 Browning medium machine gun, signal flag holders and an oil can mounted on the rear of the left fender. It also has ammunition racks modified to suit the 105mm ammunition, new communications equipment, modified commander's seat, new gunner's seat, azimuth indicator installed, driver's hatch modified so that it can opened from the outside, coaxial machine gun replaced by a 7.62mm Browning machine gun and the cupola mounted DShK 1938/46 antiaircraft heavy machine gun replaced by a 12.7 mm Browning heavy machine gun, new fire control, night vision equipment, electrical system, air-conditioning system, antennae mounts on the rear of the turret, infantry tank-telephone on the rear of the hull, exhaust outlet angled upwards, additional track stowage and fire-extinguishing system installed.
Tiran-5 - Modified T-55 with original 100 mm gun. It has two water cans are fitted to the rear of the turret, new fenders, a rounded stowage bin on the rear of the turret and pintle-mounted .30 cal M1919A4 Browning medium machine gun in front of the loader's hatch. Later fitted were the .50 cal M2 heavy machine gun over the barrel of the tank gun, extra gas cans, first aid box, ring around the loader's hatch for the .30 cal, new lights similar to the ones used in the M60 Patton, a folded stretcher on the left hand side of the vehicle and an infantry tank-telephone on the rear of the hull.
Tiran-5Sh - upgraded T-55, fitted with Sharir 105 mm gun. It also has ammunition racks modified to suit the 105mm ammunition, new communications equipment, modified commander's seat, new gunner's seat, azimuth indicator installed, driver's hatch modified so that it can opened from the outside, coaxial machine gun replaced by a 7.62mm Browning machine gun and the cupola mounted DShK 1938/46 antiaircraft heavy machine gun replaced by a 12.7 mm Browning heavy machine gun, new fire control, night vision equipment, electrical system, air-conditioning system, antennae mounts on the rear of the turret, exhaust outlet angled upwards, additional track stowage and fire-extinguishing system installed. It is also known as T-55S.
Tiran-5Sh fitted with a dozer blade.
Ti-67 fitted with Blazer ERA.
Ti-67s - This is the Ti-67 with many other improvements in addition to all of the previous modifications. They include fitting the American Detroit Diesel 8V-71T engine developing 609 hp, new semi-automatic hydromechanical transmission equipped with a torque converter, new air cleaners, Blazer explosive reactive armor added to the hull and turret, Cadillac-Gage-Textron gun stabilization system, installation of EL-OP Matador computerized fire control system, low-profile commander's cupola, IR detectors, Image-intensifier night vision equipment for the commander, gunner and driver, Spectronix fire detection and suppression system, new turret basket, extensive external stowage, modernized driver's station including replacement of tillers by a steering wheel, new final drives, new all-internal fuel system and improved suspension.
Achzarit - T-55 tank converted into heavy armored personnel carrier.
VT-55A
T-54/T-55 operators and variants