Genuine OEM Audi exhaust clamp, part number 8E0253139C. This metal sleeve is designed to secure exhaust pipe connections, ensuring a gas-tight seal between sections of the exhaust system. It is used to join pipes or mufflers within the exhaust assembly. Genuine OEM clamps provide the correct clamping force and corrosion resistance required to prevent exhaust leaks and vibration-induced noise, maintaining the integrity of the entire exhaust flow.