BMW E39 - E46 - E53 - E60 - E82 - E85 - E87 - E-0

Differential ATB for all BMW´s models BMW E39, E46, E53, E60, E82, E83, E85, E87, E89, E90 and 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. 

E39
520, 523, 525,528 Y 530I auto. 
E46
318d Auto, 320i 323 Auto, 325i, 325ix, 330i Auto, 330iX
E53
X5 3.0i, 3.0d, 4.4 y 4,6i
E60
520i, 520d, 525i Auto, 525 SMG, 530i Auto, 530iX, 540i Auto.
E63
X5 30d, 35ix
E82
120d Auto, 123d Auto, 1245i Auto, 125i, 128i 135i Auto.
E83
X3 2.0 Auto, 3.0i 
E85
Z4 2.2i, 2,5i auto, 2.5 Si M, 2.5i M, 3.0i Auto, 3.0 Si. 
E87
118d Auto, 123d Auto, 123d, 130i
E89
Z4 18i Auto, 20i Auto, 23i, 23i Auto, 28i, 30i, 30i Auto. 
E90
320d, 320d Auto, 325i, 325i Auto, 328iX, 330i, 330i Auto, 335i Auto, 335iX Auto. 
E92
320d Auto final drive 7591017, 320d final drive 3.15:1, 325i, 325i Auto, 328i, 330i, 330i Auto, 335iX