Audi A6/S6 Inner Door Seal / Weather Stripping Front, Left, Right 4G0831721A

The inner door seal/weather stripping (OEM Part Number 4G0831721A) is a critical component located along the front edge of the driver and passenger doors in various Audi models, including the A6 and S6 from 2012 to 2018. This factory-original part ensures a proper seal when the door is closed, preventing water, dust, and air from entering the cabin. It interfaces with the door frame and window assembly to maintain a quiet, comfortable ride. Common issues requiring replacement include wear from frequent opening and closing, cracking due to UV exposure, or damage from accidental impacts. Proper sealing is essential for preserving interior integrity, reducing noise, and improving HVAC efficiency. Also referred to as door seals, this part is compatible with Audi A6 and S6 models across multiple trims, ensuring you get an authentic solution to enhance your vehicle’s functionality.