Part# 2123200358 Air Suspension Valve Block Control Unit For Mercedes Benz 2006-2015 W164 W166 W221 W251 GL350 ML250 ML63 CL550 S350 R350-212 320 03 58
High quality aftermarket product,direct replace the old one in your vehicle.
Package include:1x Air Suspension Valve Block
If the Air Suspension Valve Control Unit failed, air may be leaked back to the compressor or the central air reservoir. This can cause the vehicle to not maintain the ride height required. So the failed valve block should be replaced asap.