S3 Gasket between Turbo and downpipe Should be replaced after each tightening. The dimensions of the seal: -Inside diameter 83,4mm -Spacing to the screw holes 113,0mm The seal fits: Audi A3 (8L1) S3 quattro - 154 kW Audi A3 (8L1) S3 quattro - 165 kW Audi TT (8N3) 1.8T quattro - 165 kW Audi TT (8n3) 1.8T quattro - 176 kW Audi TT Roadster (8N9) 1.8T quattro - 165 kW Seat Leon (1M1) 1.8T Cupra R 154 kW Please measure before ordering. Manufacturer Information about the manufacturer BAR-TEK BAR-TEK Motorsport GmbH Im Rauschen Auel 3, 51491 Overath-Brombach, Germany info@bar-tek.com