Blackline BMW E24,E28,E30,E34,E36,xE36,Z1,Z3 Helical LSD 

This is for Vehicles Fitted with 188 differential. PLEASE NOTE the 188 Medium Case as well as the 168, 168L, 188L, 188K, 210 etc are commonly used in the BMWs.

PLEASE CHECK the One Purchased is correct for your vehicle as different cases can fit the same vehicle. 

We can provide a diagram for you to check.

Suits:-

BMW E30 325i / 325ix Manual Rear Axle / M3
BMW E36 323i Auto / 325i / 328i Auto 3.15 ratio
BMW E36 M3 3.0 / M3 EVO 3.2 with diff 2227453 / M3 USA

BMW E28 518i / 525i / 535i / 528i Manual

BMW E34 524td Manual / 525i Auto (Australian Spec) / 525i Manual / 530i / 535i 

BMW E24 633CSI / 635CSI

BMW Z1 All Models

BMW Z3 M Coupe / M Roadster

Not suitable for 168L, 168, 188K, 188L 210 Differentials - also available in our shop

Not suitable for E36 diff 1428373

Helical LSD Advantages:-

• Equal rotational speed to both wheels
• Torque distributed according to traction
• Minimal service requirements - no clutches
• Quick reaction compared to viscous LSDs
• Gentle and progressive engagement, low noise
• Easily controlled power take-off and drifting
• Gears and body manufactured from 8620 alloy steel
• Direct replacement into stock differential

Blackline Helical LSD's - How They Work

The Blackline helical LSD's are torque biasing, that is they distribute torque between the wheels, loading more torque towards the wheel with the best traction thus improving performance and driveabitily. Especially in low grip situations.

The helical gearing manages the distribution of friction within the LSD. When torque is applied to the helical gear system it creates force that pushes the gear into the differential body, thus creating friction. Increases of torque, increases the thrust force directly proprotional to the amount of torque. This allows the Blackline LSD to cope with considerable traction imbalance even under heavy power conditions, as would be the case on exiting a powered up corner. But at low torque conditions the LSD can differentiate quietly and smoothly, thus making the differential very suitable for normal road driving. The Blackline LSD uses the popular parallel axis helical geared configuration optimised for even load distribution. They are designed with a torque bias of 5:1 this means that if  one wheel loses traction then the wheel with the most grip can receive five times as much torque as the wheel that is slipping. However, five times zero is still zero, so all these helical LSD's work best when both wheels are 'planted' and some traction is still available on the slipping wheel. In practice this is rarely a problem as there is always some 'drag' on the slipping wheel, however some drivers expertly use left foot braking to partially lock the spinning wheel.

Note - Helical LSD's work especially well when combined with modern anti-lock braking systems.

You are buying the Assembled differential unit only, no bearings, gears or gaskets will be included.