The Pierburg Secondary Air Injection Control Valve (part number 701318200) is a component of the secondary air injection system in vehicles. This valve controls the flow of air into the exhaust system, which helps to reduce emissions and improve engine performance. It is designed to open and close at specific times to allow fresh air to enter the exhaust system and mix with the exhaust gases. This helps to promote more complete combustion and reduce harmful emissions. The Pierburg Secondary Air Injection Control Valve is a high-quality, durable component that is essential for the proper functioning of the secondary air injection system in vehicles.