Genuine OEM Peugeot Engine Water Housing Seal, part number 9813021980. This seal is designed to create a watertight barrier between the engine water housing and the engine block or other components it attaches to. Its primary function is to prevent coolant from leaking out of the cooling system, which is critical for maintaining optimal engine operating temperature and preventing overheating. The seal is positioned between the water housing and the engine assembly. Genuine OEM seals are made from high-quality materials engineered to withstand extreme temperatures and pressures within the cooling system, ensuring long-lasting performance and preventing costly engine damage.