Audi Coolant / Water Pump Hose / Line 8K0145921Q

The OEM Coolant Hose (Part Number: 8K0145921Q) is a crucial component for maintaining the efficiency of the cooling system in select Audi models, including the 2013-2017 Audi S5 and 2013-2016 Audi S4. This genuine factory-original part plays a vital role in facilitating the flow of coolant between the engine and the radiator, preventing overheating and ensuring optimal engine performance. Positioned within the auxiliary cooling system, this hose is particularly essential for the 3.0L V6 engines, commonly identified in these models. Signs of wear such as leaks or swelling can lead to reduced cooling efficiency, making this replacement necessary for restoring proper function. Compatible with vehicles such as the Audi A5 Quattro and A4 Quattro from the same years, this hose may also be referred to as a water line or coolant pipe. Other part numbers linked to this hose include 8K0145923F and 8K0819373D, ensuring versatility in selection. Authenticity as an OEM part guarantees precise fitment and performance, reinforcing reliability and durability in your vehicle's operation.