Description: This Air Suspension Valve Block Fits For the Following Vehicles: 2006 CLS500, 2006 CLS55 AMG, 2007-2011 CLS550, 2007 -2011 CLS63 AMG, 2003-2009 E320, 2006-2009 E350, 2003-2006 E500, 2003-2006 E55 AMG, 2007-2009 E550, 2007-2009 E63 AMG. OE part number: A 211 320 01 58, A2113200158, 211 320 01 58, 2113200158. Air suspension solenoid valve block is an electronically-controlled module that’s used in air suspension systems to fill and vent each air bag. It is responsible for distributing air from the compressor to air struts or air springs. Over time its O-rings can dry rot, causing damage to the compressor via air leaks and overworking, along with moisture damage to the electrical solenoid components. The main problem with the valve block is that the solenoid valves may leak air back to the compressor or the central air reservoir. This can cause the vehicle to not maintain the ride height required. If you need help with troubleshooting the valve assembly, you can replace a new valve bolck. It is located near the air suspension compressor and you can do it youself. Professional installation is recommended Specification: For exact years and models, please check compatibility. For 2006 CLS500 / CLS55 AMG W219 For 2007-2011 CLS550 W219 For 2007-2011 CLS63 AMG W219 For 2003 E320 Sedan W211 For 2004-2009 E320 W211 For 2006-2009 E350 W211 For 2003-2006 E500 W211 For 2003-2006 E55 AMG W211 For 2007-2009 E550 W211 For 2007-2009 E63 AMG W211 Packing size: 11x10x7cm/4.3x3.9x2.8 inch Package Includes: 1x Air Suspension Control Valve Block