Front prop shaft for 2006-2011 Mercedes ML W164, 2007-2012 GL X164 and R-Class W251 4MATIC, replacing 1644100701 and 938-077.
This is the front driveshaft for the Mercedes 4MATIC SUVs built on the 164 platform: ML320, ML350, ML450, ML500, ML550 and ML63 AMG (W164, 2006-2011), GL320, GL350, GL450 and GL550 (X164, 2007-2012), and the R320, R350, R500 and R63 AMG (W251, 2006-2012). It replaces Mercedes 1644100701 and crosses to 938-077 and 65-7053.
The shaft sits beside the transmission and connects the transfer case to the front differential with a CV joint at each end. The common complaint is a clunk or knock from under the driver footwell when pulling away or shifting into gear, often after a CV boot splits and the joint runs dry. A seized front CV joint can also make a vibration on acceleration that goes away when coasting.
Both ends bolt up with flange bolts. On the ML and GL you will usually drop the transmission crossmember slightly for clearance. Measure the old shaft end to end before ordering: this one is 23.7 in. compressed and 25.51 in. extended.
| Fits | 2006-2011 Mercedes ML W164, 2007-2012 GL X164, 2006-2012 R-Class W251, 4MATIC AWD |
| Position | Front |
| Replaces | 1644100701, 938-077, 65-7053 |
| Joints | CV joint both ends |
| Compressed length | 23.7 in. |
| Extended length | 25.51 in. |
| Material | Steel |
