Genuine OEM Volkswagen Cooling System O-Ring Gasket, part number 04L121119C. This essential sealing component is designed to prevent fluid leaks within the vehicle's cooling system, maintaining optimal pressure and temperature regulation. It forms a tight seal between mating surfaces in various cooling system connections. Weighing a mere 0.00005 kg and with a diameter of 0.017 m, this O-ring is made from high-quality, heat-resistant rubber compounds. Using a genuine OEM O-ring ensures precise dimensions and material composition, critical for preventing coolant loss and maintaining the integrity of the engine cooling system.