Mercedes ML W164 Driveshaft Center Support Bearing A1644103102

This is the center support bearing that holds up the middle of the two-piece driveshaft on the W164 Mercedes-Benz M-Class. It is a sealed ball bearing in a rubber isolator with a steel mounting bracket, and it replaces Mercedes part number A1644103102 (1644103102).

Listed fitment: 2007-2009 ML320, 2006-2011 ML350, 2005-2011 ML500, 2008-2011 ML550, and 2007-2009 and 2011 ML63 AMG. Match the part number on your old bearing before you order.

When this bearing fails you hear a hum or rumble from under the middle of the vehicle that gets louder with speed. You may also feel a vibration on acceleration from a stop, or a clunk when you shift between drive and reverse. On higher-mileage ML350s the rubber isolator often cracks and lets the shaft sag.

Bench notes: mark both shaft halves and the flanges before you pull the driveshaft so it goes back in the same phase and balance. Support the shaft while you unbolt the old bracket. Load the new bearing evenly with the vehicle at ride height before you torque the bracket nuts, so the isolator is not preloaded to one side.