Mercedes E Class W211 WABCO AIR SUSPENSION COMPRESSOR PISTON RING REPAIR FIX KIT X8R45 Noisy suspension? Is your vehicles air suspension rising slowly or perhaps failing to rise at all? 'Air Suspension Issues' Red light lit? 'Stop. Car Too Low, 5503 - The car is taking too long to fill the central reservoir, 5505, 5508 - The system can't build up pressure? The piston ring within your vehicles EAS air compressor is worn reducing output significantly. The poor quality piston ring within your air suspensions compressor wears over time causing these symptoms. The piston ring within the compressor unit of your air suspension system deteriorates over time, the OEM piston ring is made from a soft plastic that wears quickly, this wear substantially reduces the output of your compressor leading to noisy, slow rising or non-rising suspension. VEHICLES AFFECTED: Mercedes E Class 2002-2009 (w211) Associated part numbers, our kit will only repair Wabco compressors. A2113200304 Wabco: 415 403 303 0, 415 403 112 0. Wabco Air Suspension Compressor Piston Ring Seal Replacement Repair: https://youtu.be/_BwGaP4Zaqc INSTRUCTIONS: 1. http://x8r-instructions.co.uk/Wabco-Air-Suspension-Compressor-Piston-Ring-Seal-R.pdf **** 2. https://www.youtube.com/embed/_BwGaP4Zaqc?rel=0