Crossparts//Vennestraat 18//2275 Gierle//04 98 60 81 55


BMW E21, E30, E36,…. 168diff

 650,00  537,19 ex. BTW


BMW E21,E30,E36,E53,E83,Z3 Helical LSD for vehicles fitted with 168 differential.


  • E21 315, 316, 318
  • E21 320i
  • E21 323i without OE LSD
  • E30 318i and 318is
  • E36 316i, 318ti
  • E36 318is, 320i
  • E53 X5 4.4i Auto Front diff
  • E53 X5 4.6is Front diff
  • E83 X3 3.0d Front Axle
  • E83 X3 3.0sd Front Axle
  • Z3 Z3 1.9 Manual
  • Z3 Z3 2.0 Manual




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
 Helical LSD’s – How They Work

The 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  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 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.