Genuine OEM Volkswagen Coolant Hose with Quick Coupling, part number 5WA122051M. This hose is a vital part of the engine's cooling system, responsible for transporting coolant between the engine and the radiator or other cooling components. It features a quick-connect fitting for simplified installation and removal. Constructed from high-quality, heat-resistant materials, this hose is designed to withstand the high temperatures and pressures within the cooling system. Genuine OEM parts are crucial for coolant hoses to ensure proper coolant flow, prevent leaks, and maintain the engine's optimal operating temperature, thereby preventing overheating.