Genuine OEM Audi Coolant Hose, part number 05A121058B. This hose is specifically designed to carry coolant to and from the turbocharger, playing a vital role in managing its operating temperature and preventing overheating. It is positioned as part of the turbocharger's dedicated cooling circuit. Weighing 0.139 kg and measuring approximately 0.255 meters in length, this hose is engineered to withstand high temperatures and pressures. Using a genuine OEM coolant hose ensures precise fitment, correct material resistance, and reliable performance, which are essential for the longevity of the turbocharger and overall engine health.