BMW K Type Differential Bearing Replacement Kit (1999-2006): E46, E39, E38, E65, E66, E67, E83, E53, E85, E86

Maintain the performance and reliability of your BMW’s K type differential with this RacingDiffs Differential Bearing Replacement Kit. Engineered for BMW models produced from 1999 to 2006, this kit is specifically designed for 6-cylinder (188K) and 8-cylinder (215/220K) differentials, as found in select 3, 5, 7, X3, X5, and Z series models.

Kit Includes:

• 1x Crush sleeve shim
• 1x Small pinion bearing
• 1x Large pinion bearing
• 1x Input flange oil seal
• 2x Output flange oil seals

Features:

• OEM-quality components for reliable fit and long service life
• Comprehensive kit includes all essential bearings and seals for a complete differential refresh
• Guided installation support available through detailed video tutorials

Fitment:

• 3 Series: E46
• 5 Series: E39
• 7 Series: E38 (late models), E65, E66, E67
• X3 Series: E83
• X5 Series: E53
• Z Series: E85, E86

How to Diagnose Differential Bearing Issues:
Listen for characteristic noise from the differential or transmission during acceleration and engine braking. To differentiate from wheel bearing noise, steer left and right; if the noise changes, it’s likely a wheel bearing. If the noise remains unchanged, differential bearings may need replacement.