Genuine OEM Audi Charge Air Cooler Clamping Ring, part number 06A145724B. This metal clamping ring is designed to securely fasten connections on the charge air cooler, preventing air leaks and maintaining optimal boost pressure within the intake system. It is a critical component for sealing hoses and pipes. Made from durable metal, it measures approximately 60mm in diameter. Using a genuine OEM clamping ring ensures precise fitment and the necessary clamping force to withstand high pressures and temperatures in the charge air system, preventing costly boost leaks.