Multi-layer metal cylinder head gasket for your 2.5L TFSI engine in the Audi TT RS and RS3. Features: OEM-Thickness Bore: 83.50 mm Multi-layer metal head gasket New head bolts should be used in any case! Or even better ARP stud bolt. Here you can find the complete Cylinder head gasket set . Here you can find our thicker RACE cylinder head gasket to reduce the compression. Manufacturer Information about the manufacturer BAR-TEK BAR-TEK Motorsport GmbH Im Rauschen Auel 3, 51491 Overath-Brombach, Germany info@bar-tek.com