Genuine OEM Audi Coolant Hose, part number 4S0121106A. This flexible hose is a vital part of the engine cooling system, responsible for transporting coolant between various engine components, including the expansion tank, to maintain optimal operating temperatures. Weighing 0.232 kg and measuring 0.445m in length, it is manufactured from high-quality, heat-resistant materials. Choosing genuine OEM ensures the hose has the correct internal diameter, pressure rating, and precise routing geometry, which are essential for preventing leaks and ensuring the long-term reliability of the cooling system.

Catalogue entry: HOSE.