058109088K 06D109229B 058198217 1.8T Shaft Timing Tensioner Chain Gasket For A3 A4 A6 TT GolfMK4 B5 Boetle This timing tensioner chain gasket is designed for use with 1.8T engines and fits models including A3, A4, A6, TT, MK4, and B5.It is compatible with engine codes 058109088K, 06D109229B, and 058198217.The gasket provides a secure seal for the timing tensioner assembly, helping maintain proper chain tension and alignment.It is engineered to replace the component during timing system maintenance or repair.Installation requires standard mechanical tools and knowledge of engine timing systems. Important: This is an independent aftermarket part.Brand/model references serve only to show compatibility.