Audi 2.7L Biturbo manifold gasket/combustion ring. Gasket between manifold and turbocharger. The gasket should be renewed with every assembly. For the Biturbo 2 gaskets are needed. Price per gasket. Manufacturer Information about the manufacturer BAR-TEK BAR-TEK Motorsport GmbH Im Rauschen Auel 3, 51491 Overath-Brombach, Germany info@bar-tek.com