This is a genuine rear bumper and diffuser for the BMW 4 Series M Sport G26. It is designed to fit perfectly and is made to the highest quality standards. The part is compatible with the reference OE/OEM number 51128078583 and is suitable for rear placement on the vehicle. The bumper is made by the trusted brand BMW and is a wing/quarter panel type bumper. It is ideal for those looking to replace or upgrade their current bumper. The part is manufactured in and is of the highest quality. This item is perfect for anyone looking to enhance their car’s exterior and is a must-have for BMW enthusiasts.