Genuine OEM Audi Engine Coolant Hose, part number 8K0819374AC. This critical component is responsible for transporting engine coolant between various parts of the cooling system, ensuring efficient heat dissipation and maintaining optimal engine operating temperatures. It is positioned as part of the complex network of hoses within the engine bay. Made from high-quality, heat-resistant rubber, it measures approximately 225mm in length. Using a genuine OEM coolant hose ensures correct routing geometry, material compatibility, and resistance to extreme temperatures and pressures, preventing leaks and system failures.