This residual pressure holding valve is suitable for the rear air suspension strut of Mercedes S-Class W220.
Residual pressure retaining valves of the original air suspension struts usually become defective after a while which leads to a problem with the strut and it cannot be steered up and down anymore. With this valve you have the possibility to repair your strut at a reasonable cost.
The delivery also includes an O-Ring and an airline fitting.
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