BMW 168mm Limited Slip Differential Upgrade Kits

Engineered for most 4-cylinder BMW models produced before 1999, the 168mm small-case Limited Slip Differential is a direct fit for the E21, E30, E36, and Z3 platforms. Restore and enhance your differential’s performance with precision components designed for street, track, or race use.

Available Kits:

• Service Pack:
  • 2-clutch set to restore original limited slip function and authentic differential feel.
• Stage 1 - Track Pack:
  • 2-clutch set with RacingDiffs’ durable clutch plates for improved grip and longevity.
  • Billet steel cap for added strength.
  • Ramp saver shim for extended differential lifespan.
• Stage 2 - Race Pack:
  • 4-clutch set with RacingDiffs’ enhanced clutch plates for a more aggressive and consistent lock-up.
  • Billet steel cap for superior stability.
  • Pre-load shim set for precise adjustment.
  • Ramp saver shim to maintain long-term performance.
• Stage 3 - Max Performance Pack:
  • 4-clutch set with RacingDiffs’ highest-grade clutch plates.
  • Billet steel cap for maximum durability.
  • Pre-load shim set for tailored lock characteristics.
  • Multi-variation ramp set for customizable differential response and power distribution.

For a complete differential rebuild, add the Bearing & Oil Seal Set (sold separately).

Compatible OEM Part Numbers:
33141203806, 33141203803, 33141203804, 33141203805, 33141204153

Fitment: BMW E21, E30, E36, Z3 (4-cylinder models, pre-1999) with 168mm small-case differential.