Genuine OEM SEAT Radiator Gasket, part number 5FJ121331. This gasket is specifically designed for the left side of the radiator assembly. Its primary function is to create a tight seal between the radiator and other cooling system components, preventing coolant leaks and maintaining optimal engine temperature. Made from durable, heat-resistant rubber, it ensures reliable performance. Genuine OEM parts are critical for maintaining the integrity of the cooling system and preventing costly leaks.