Arnott's air suspension compressor P-3278 for the 2012-2017 Audi A6 & S6 (C7), 2014-2017 RS&, 2012-2017 A7 & S7 (4G) is a direct replacement for the original OE compressor from Audi. The compressor comes complete with a mounting bracket, integrated air dryer and electrical connectors for a fast plug and play installation. The most common cause of compressor failure is a leak in the air suspension system such as the rubber air springs.