Genuine OEM Audi Coolant Pipe, part number 03L121151N. This pipe assembly is a critical component in the engine cooling system, designed to transport and help regulate the flow of coolant throughout the engine. It is positioned within the engine bay, connecting various cooling system components. Weighing approximately 0.84 kg, this pipe is engineered for durability. Choosing a genuine OEM coolant pipe ensures the correct routing geometry, material integrity, and pressure resistance for a leak-free and efficient cooling system.