Line External Radiator

The external radiator line (17128096431) is a genuine BMW part compatible exclusively with M Series vehicles, including the M2, M3, M4, and other high-performance models. This component supports the engine’s cooling system, maintaining optimal temperatures even under demanding driving conditions. By ensuring efficient heat management, this part helps protect your engine and enhance its performance. As an original BMW product, it guarantees a perfect fit and reliable functionality for your vehicle.

Part 17128096431 is identified as number 04 in the diagram.