RKX VW & Audi Gas cap replacement seal

RKX Gas cap seal for Volkswagen & Audi applications Made from high quality nitrile rubber This is a common failure point that can case check engine lights for evap leaks and other faults. Common fault codes are P0440  / 16824, P0456 / 16840, P0442 / 16826, P0455 / 16839. Don't settle for aftermarket caps that cause more problems than they solve! Reseal your factory cap!  The RKX seal has been designed and tested to work with a wide range of gas caps manufactured by VW & Audi. FITMENT: It is compatible with most caps used between 1998- To Present Please study pictures carefully! Note: some 2005 - 2012 Jetta, Beetle, Golfs, A3 Use a 1/4 turn cap with a flat style seal this will not fit.(please see our other listings for a flat style cap seal) Advantages of replacing just the gas cap seal: - More affordable - Retain high quality OE cap with theater - Avoid gas cap warning lights from using aftermarket caps  Partial list of compatible part numbers: 3C8201550E, 3C8 201 550E, 3C8 201