The Genuine Porsche Secondary Air Injection Hose - 99711333902 is a high-quality replacement part for Porsche vehicles. This hose is responsible for delivering secondary air into the engine, which helps with emissions control and improves engine performance. It is made from durable materials to withstand high temperatures and pressure, ensuring long-lasting performance and reliability. This hose is designed specifically for the Porsche 997 model and meets all factory specifications. It is an essential component for maintaining the proper functioning of the vehicle's secondary air injection system.