BMW 168mm Limited Slip Differential Rebuild Kits – E21, E30, E36, Z3 (Pre-1999 4-Cylinder Models)

Restore and upgrade your BMW’s small-case (168mm) limited slip differential with precision-engineered rebuild kits, designed specifically for most 4-cylinder BMW models built before 1999, including the E21, E30, E36, and Z3.

Available Kits:

• Service Pack:
  • 2-clutch set for authentic OEM differential feel.
• Stage 1 – Track Pack:
  • 2-clutch set with RacingDiffs' durable clutch plates for improved grip and longevity.
  • Billet steel cap for enhanced durability.
  • Ramp saver shim for extended differential health.
• Stage 2 – Race Pack:
  • 4-clutch set with RacingDiffs' enhanced clutch plates for aggressive performance.
  • Pre-load shim set for precise lock characteristics.
  • Billet steel cap for superior strength.
  • Ramp saver shim for improved handling and differential life.
• Stage 3 – Max Performance Pack:
  • 4-clutch set with RacingDiffs' premier clutch plates for maximum performance.
  • Ultra-durable billet steel cap.
  • Pre-load shim set for fine-tuned engagement.
  • Multi-variation ramp set for customizable differential behavior and optimal power distribution.

Additional Components:

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

Fitment: BMW E21, E30, E36, Z3 – 168mm small-case limited slip differentials, most 4-cylinder models before 1999.

OEM Part Numbers:

• 33141203806
• 33141203803
• 33141203804
• 33141203805
• 33141204153