The Rein Secondary Air Pump Hose (X5) - ABV0159 is a high-quality hose designed for use with secondary air pumps in automotive engines. This hose is made from durable materials that are resistant to heat and wear, ensuring long-lasting performance. It is specifically designed to fit the X5 model and is a direct replacement for the original part. The Rein Secondary Air Pump Hose is essential for proper air flow and emissions control in the engine, making it an important component for maintaining the overall health and performance of your vehicle.