Audi A8, D3, 4E WABCO AIR SUSPENSION COMPRESSOR PISTON RING REPAIR FIX KIT X8R45 Audi A8, D3, 4E WABCO AIR SUSPENSION COMPRESSOR PISTON RING REPAIR FIX KIT. Noisy suspension? Is your vehicles air suspension rising slowly or perhaps failing to rise at all? Vehicle stuck at Level 1. Failing to progress through Levels 2,3,4. 01400 or 01577 code shown? Yellow suspension error light lit? VEHICLES AFFECTED: Audi A8, D3, 4E models between 2002-2010 Associated part numbers, our kit will only repair Wabco compressors. 4E0 616 005 D/F/H or 4E0 616 007 B/D (6/8 cylinder petrol), 4E0 616 005 E/G or 4E0 616 007 A/C/E (10/12 Cylinder Diesel) Wabco: 415 403 308 0 (6/8 cylinder petrol) and 415 403 309 0 (10/12 cylinder diesel) THE CAUSE: 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 THE SOLUTION Fit our improved design PTFE piston ring and restore your compressor to full health! Simply install our replacement PTFE piston ring and restore your compressor, full instructions are included to guide you through this simple process which should take under 30 minutes. Our item is made from PTFE which has far superior wear resistance compared to the OEM part providing a permanent fix to the problems with your compressor. 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