M41: Standard production model from 1951 to 1952.
Armed with a M32/T91E3 76mm rifled gun on an M76/T138E1 mount and carried fifty-seven rounds of 76mm ammunition.
Turret traverse was conducted through a pulsing relay system and electrical drives.
and the tank was powered by an AOS-895-3 petrol engine.

M41A1: Replaced the base M41 as standard production model.
Armed with a M32A1 76mm rifled gun on an M76A1 mount.
Carried sixty-five rounds of 76mm ammunition.

M41A2: Incorporated a new hydraulic turret traverse system, with direct mechanically linked control of the oil gear pump.
Also featured a new AOS-895-5 fuel injection engine, dual power traverse for the tank commander, and a pinion-type gun elevation gear.

M41A3: Final production model of the M41 series, functionally identical to the M41A2 but incorporating a slightly modified gun traverse and elevation system.

QM41: United States Navy model, fitted with a remote control mechanism and employed for ordnance testing purposes.

M41 105: An M41 hull retrofitted with the complete turret and 105mm gun of the Stingray light tank.
This prototype was trialed by Cadillac Gage as a potential market upgrade for preexisting M41 tanks but was not adopted by any country.

M41B: M41 modernized by Bernardini S/A Industria e Comercio for the Brazilian Army.
Fitted with a new Saab-Scania DS-14A 04 eight-cylinder diesel engine developing 405 hp (302 kW), enabling the tank to reach speeds of up to 70 km/h (43.49 mph).
A new cooling system was also installed, consisting of a radiator and two large fans.
The size of this apparatus required the construction of an entirely new rear hull.
The 76mm gun has been bored out to 90mm caliber, shortened, and fitted with a counterbalance on the barrel and a torsion bar compensator at the breech; this heavily modified M32 is known as the Ca 76/90 M32 BR2.

M41C: M41B rebuilt to the specifications of the Brazilian Marine Corps, including a different DS-12 OA diesel engine and a laser rangefinder.

M41D: M41 modified by the Republic of China Army with a new Detroit Diesel 8V-71T diesel engine, enabling the tank to reach speeds of up to 72 km/h (44.7 mph) and increasing its range to 450 km (279 miles).
The turret was altered to carry a Taiwanese-manufactured variant of the M32 known as the M32K1, as well as a co-axial Type 74 (FN MAG) general purpose machine gun.
The M32K1 has a fume extractor and a different muzzle brake, and has been upgraded with thermal imaging sights.

M41 DK-1: M41 modified by the Royal Danish Army with a NBC protection system, an external laser rangefinder, and thermal imaging equipment.

M41E: M41 modified by the Spanish Army with a new General Motors 8V-71T diesel engine developing 400 hp (298 kW); this increases the tank's range to about 483 km (300 miles).

M41GTI: M41 modernized by two unidentified German companies for the Royal Thai Army.
Fitted with a new MTU MB 833 Aa501 diesel engine developing 442 hp (330 kW), enabling the tank to reach speeds of up to 60 km/h (37.3 mph) and increasing its range to 600 km (373 miles).
The 76mm gun was also coupled to thermal imaging sights and a laser rangefinder, as well as a new co-axial Heckler & Koch HK21 machine gun.

M41 HAKO: Turretless M41 modified by the Spanish Army to carry a bank of HOT anti-tank guided missiles.

M41U: M41A1 with improved armor and a turret altered to carry the Belgian-designed 90mm Cockerill Mk.
IV gun as well as a co-axial FN MAG general purpose machine gun.
Developed by Belgium for the Uruguayan Army.

Type 64: A M41 designed by the Republic of China Army, similar to the M-41D but with significantly thicker armor and a co-axial M60 machine gun.
It is unclear whether the Type 64 is an M41 derivative built under license in the Republic of China, or simply a rebuilt M41A2/M41A3.
Unlike the M41 series the Type 64's turret is entirely cast steel, and its interior dimensions are smaller.
M41: Standard production model from 1951 to 1952. Armed with a M32/T91E3 76mm rifled gun on an M76/T138E1 mount and carried fifty-seven rounds of 76mm ammunition. Turret traverse was conducted through a pulsing relay system and electrical drives. and the tank was powered by an AOS-895-3 petrol engine.
M41A1: Replaced the base M41 as standard production model. Armed with a M32A1 76mm rifled gun on an M76A1 mount. Carried sixty-five rounds of 76mm ammunition.
M41A2: Incorporated a new hydraulic turret traverse system, with direct mechanically linked control of the oil gear pump. Also featured a new AOS-895-5 fuel injection engine, dual power traverse for the tank commander, and a pinion-type gun elevation gear.
M41A3: Final production model of the M41 series, functionally identical to the M41A2 but incorporating a slightly modified gun traverse and elevation system.
QM41: United States Navy model, fitted with a remote control mechanism and employed for ordnance testing purposes.
M41 105: An M41 hull retrofitted with the complete turret and 105mm gun of the Stingray light tank. This prototype was trialed by Cadillac Gage as a potential market upgrade for preexisting M41 tanks but was not adopted by any country.
M41B: M41 modernized by Bernardini S/A Industria e Comercio for the Brazilian Army. Fitted with a new Saab-Scania DS-14A 04 eight-cylinder diesel engine developing 405 hp (302 kW), enabling the tank to reach speeds of up to 70 km/h (43.49 mph). A new cooling system was also installed, consisting of a radiator and two large fans. The size of this apparatus required the construction of an entirely new rear hull. The 76mm gun has been bored out to 90mm caliber, shortened, and fitted with a counterbalance on the barrel and a torsion bar compensator at the breech; this heavily modified M32 is known as the Ca 76/90 M32 BR2.
M41C: M41B rebuilt to the specifications of the Brazilian Marine Corps, including a different DS-12 OA diesel engine and a laser rangefinder.
M41D: M41 modified by the Republic of China Army with a new Detroit Diesel 8V-71T diesel engine, enabling the tank to reach speeds of up to 72 km/h (44.7 mph) and increasing its range to 450 km (279 miles). The turret was altered to carry a Taiwanese-manufactured variant of the M32 known as the M32K1, as well as a co-axial Type 74 (FN MAG) general purpose machine gun. The M32K1 has a fume extractor and a different muzzle brake, and has been upgraded with thermal imaging sights.
M41 DK-1: M41 modified by the Royal Danish Army with a NBC protection system, an external laser rangefinder, and thermal imaging equipment.
M41E: M41 modified by the Spanish Army with a new General Motors 8V-71T diesel engine developing 400 hp (298 kW); this increases the tank's range to about 483 km (300 miles).
M41GTI: M41 modernized by two unidentified German companies for the Royal Thai Army. Fitted with a new MTU MB 833 Aa501 diesel engine developing 442 hp (330 kW), enabling the tank to reach speeds of up to 60 km/h (37.3 mph) and increasing its range to 600 km (373 miles). The 76mm gun was also coupled to thermal imaging sights and a laser rangefinder, as well as a new co-axial Heckler & Koch HK21 machine gun.
M41 HAKO: Turretless M41 modified by the Spanish Army to carry a bank of HOT anti-tank guided missiles.
M41U: M41A1 with improved armor and a turret altered to carry the Belgian-designed 90mm Cockerill Mk. IV gun as well as a co-axial FN MAG general purpose machine gun. Developed by Belgium for the Uruguayan Army.
Type 64: A M41 designed by the Republic of China Army, similar to the M-41D but with significantly thicker armor and a co-axial M60 machine gun. It is unclear whether the Type 64 is an M41 derivative built under license in the Republic of China, or simply a rebuilt M41A2/M41A3. Unlike the M41 series the Type 64's turret is entirely cast steel, and its interior dimensions are smaller.
M41 Walker Bulldog