General description SET of 4 ABS Wheel Speed Sensors designed for various models of the W164 and X164 -Class vehicles. These sensors are essential for accurate wheel speed readings, contributing to the overall safety and performance of your vehicle. Technical specifications Material: ABS Color: Black Interchange Part Numbers: Front: 1649058200, 1645400917, 1644408339, 1644405541, 1645401617 Rear: 1645400717, 1649058300, 1644405641, 1645401517 Measurement allowed error: +/- 1-3 cm Compatibility and accessories Compatible with the following vehicles: 2007-2009 GL320 3.0L 2010 GL350 3.0L 2007-2010 GL450 4.6L, 4.7L 2008-2012 GL550 5.5L 2007-2009 ML320 3.0L 2006-2011 ML350 3.5L 2010 ML350 3.0L 2010 ML450 3.5L 2006-2007 ML500 5.0L 2008-2011 ML550 5.5L 2007-2011 ML63 6.2L, 6.3L 2007-2009 R320 3.0L 2007-2011 R350 3.5L 2010 R350 3.0L 2007 R500 5.0L Installation Installation instructions are not provided; professional installation is recommended to ensure proper functionality. Usage These