This is a genuine BMW roof moulding that is prime-coated and designed for the left side of the vehicle. It has a part number of 51138208497. This roof moulding is made to fit perfectly on BMW vehicles and is coated with a primer for added protection. It is a high-quality product that is durable and long-lasting. This roof moulding is an essential part of the vehicle's exterior and helps to protect the roof from damage. It is a perfect replacement for damaged or worn out roof mouldings and is designed to meet BMW's strict standards for quality and performance.