Genuine OEM Audi Outer Window Aperture Seal, part number 4F0837477A. This essential seal is designed to protect the vehicle's interior by sealing the window opening against environmental elements such as water, wind, and road noise. It is specifically positioned on the front left door, along the outer edge of the window aperture. Measuring approximately 1.115 meters in length, this seal is crafted from durable, weather-resistant material. Choosing a genuine OEM seal ensures an exact contour match to the door frame, proper compression, and superior resistance to UV exposure and temperature fluctuations, preventing leaks and maintaining cabin integrity.