BMW E31 - E32 - E34 - E36 - E38 - E39 - E46 -E60

Differential ATB for all BMW´s models BMW E31, E32, E34, E36, E38, E39, E46, E85, E86, E60, E63, E82, E90 y E92 (exactly models see at EXTRA INFO)

QUAIFE, manufacturer of Automatic Torque Biasing (ATB) helicar gear limited slip differential, of recognized worldwide prestige since 1980. The quality of QUAIFE is well demonstrated in all its products, being currently one of the leading manufacturers in the manufacture of LSD differential, close ratio gearkits  and gearboxes.

Unlike a limited slip disc differential, the Quaife ATB self-lock is based on gears instead of plates or clutch plates for operation. This means that it is much softer and will never block, they are progressive and adjust according to the loss of traction.
It does not lose power in acceleration like some plate style differentials.
For its installation, modification is required, simply replace the original with the new ATB Quaife differential.
Ideal for a competition or for a sporty driving (rallys, circuits, mountain, trackday ... etc)
No maintenance is necessary for proper operation.
 

• Safe, progressive and seamless in action, the Quaife ATB differential never ‘locks’
• Controlled power is transmitted to all driven wheels, to maximise traction and minimise wheelspin, particularly in slippery conditions
• Fitment greatly reduces unwanted torque steer, understeer or oversteer
• Designed to work in harmony with road car electronic stability and traction control programs
• Improves braking performance on front wheel drive cars by reducing lock up and minimising ABS intrusion due to torque transfer action
• Reduces tyre wear, especially on front wheel drive cars
• Gear operated with no service components to replace – ever
• Direct replacement for factory standard ‘open’ differential unit
• Retains normal axle lubrication systems and maintenance schedule
• Recomended for Motorsport use and trackday. 

MODELS - A

E31
840i y 840ci Manual with final drive 1214053
850Ci y 850 Csi
850Ci manual - final drive 227445
E32
740i auto 
E34
535i 
M5 3.6 & 3.8 
M5 3.8  to 06/1994

MODELS - B

E36
M3 3.0 & 3.2
E38
740i M60
E39
M5
E46
M3 3.2 manual & SMG 
E85/86
Z4 M 3.2
E60/E63
M5
M6 final drive 3.62:1
E82
M1 Coupe 
E90/92
M3