Audi R8 Coolant Hose / Line 420121030A

This OEM coolant hose, part number 420121030A, is an authentic replacement component sourced directly from donor vehicles, ensuring high-quality performance. Designed specifically for the rear placement in the Audi R8 models (2008-2015) with the 4.2L V8 engine, this part is also known colloquially as the lower hose. Its primary function is to channel coolant within the engine cooling system, preventing overheating and maintaining optimal engine performance. Common issues like damage or leaks can lead to inefficient cooling, making this hose a critical component for reliable vehicle operation. Compatible with both the R8 Base and Spyder configurations, this hose integrates seamlessly with other cooling components, helping you retain the vehicle's factory specifications. Other compatible part numbers include 420121073 and 420819376, supporting multiple repairs. Ensure the longevity and efficiency of your Audi R8 with this genuine OEM coolant hose.