Genuine OEM Volkswagen Fuel Cooler, part number 1K0203491D. This essential component is designed to reduce the temperature of the fuel before it reaches the engine, which helps optimize combustion efficiency and prevent vapor lock. It is a finned metal heat exchanger, weighing 1.154 kg, ensuring effective heat dissipation. Opting for a genuine OEM fuel cooler guarantees precise thermal performance, correct material compatibility with fuel, and durable construction, which are vital for maintaining optimal engine operation and fuel system longevity.