The Genuine BMW Seal Outer Left Mirror Triangle - 51337284421 is a high-quality replacement part for the left side mirror of a BMW vehicle. This seal is designed to fit seamlessly into the outer edge of the mirror triangle, providing a secure and watertight seal. It is made from durable materials to withstand various weather conditions and protect the inner components of the mirror from moisture and debris. This genuine BMW product is an essential component for maintaining the functionality and appearance of the left side mirror on your vehicle.