The Genuine VW / Audi Catalytic Converter Kit - 178104 is a comprehensive kit of products designed to service and maintain the catalytic converter of a car. It includes a variety of essential components that are necessary for the proper functioning of the catalytic converter. The kit contains a catalytic converter itself, as well as a gasket, bolts, and other necessary hardware for installation. Additionally, it includes an oxygen sensor, an exhaust manifold, and a heat shield. These components work together to reduce harmful emissions and ensure the efficient operation of the vehicle's exhaust system. The kit is specifically designed for use with Volkswagen and Audi vehicles, and is a genuine OEM product. It is a reliable and convenient option for car owners looking to maintain their vehicle's catalytic converter.