Center Support Bearing

The E46 uses a two-piece driveshaft with a center support bearing (CSB) mounted to the underside of the vehicle.

Failure Symptoms

• Vibration at speed (especially 60-80 mph)
• Clunking noise from under the car on acceleration/deceleration
• Visible rubber deterioration when inspected

Replacement Notes

• The driveshaft must be removed for CSB replacement
• Mark the driveshaft sections before removal for proper balance
• Typical replacement: when symptoms appear (usually 80,000+ miles)
• Replace the guibo at the same time