Question : What are the symptoms of a worn piston ring in the air suspension compressor?
Answer : Symptoms include noisy suspension, slow rising, and failure to rise at all, accompanied by error codes 5503, 5505, and 5508.
Question : What vehicles are affected by this piston ring issue?
Answer : This repair kit is designed specifically for Mercedes E Class 2002-2009 (w211) with Wabco compressors and associated part numbers A2113200304, 415 403 303 0, and 415 403 112 0.
Question : Is the replacement piston ring durable?
Answer : Yes, the kit includes an improved design PTFE piston ring with superior wear resistance compared to the OEM part, providing a permanent fix to the problems with your compressor.