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

Restore and enhance your BMW’s handling with this 168mm small-case Limited Slip Differential, designed specifically for most 4-cylinder BMWs produced before 1999, including the E21, E30, E36, and Z3. This differential is a direct fit for OEM part numbers: 33141203806, 33141203803, 33141203804, 33141203805, and 33141204153.

Available Kits:

• Service Pack:
  • 2-clutch set restores original differential operation and feel.
• Stage 1 – Track Pack:
  • 2 RacingDiffs clutch plates for improved grip and durability.
  • Billet steel cap for added strength.
  • Ramp saver shim extends differential lifespan.
• Stage 2 – Race Pack:
  • 4 RacingDiffs enhanced clutch plates for a more aggressive lock and performance curve.
  • Pre-load shim set for precise engagement.
  • Billet steel cap for superior stability.
  • Ramp saver shim and pre-load shim set for improved handling.
• Stage 3 – Max Performance Pack:
  • 4 RacingDiffs premier clutch plates for maximum performance.
  • Ultra-durable billet steel cap.
  • Pre-load shim set.
  • Multi-variation ramp set for adjustable differential characteristics and optimized power delivery.

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

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