This is a rear splash shield located in the back part of the front wheelhouse.
The wing liners in your vehicle often get damaged or replaced. These plastic liners keep rocks and road debris from hitting the metal surfaces of your wheelhouse. These small chips caused by rocks can often lead to premature rust in the wheel well. Replace your wing liner with an OE unit.
Because it’s made by Genuine BMW, fitment and mounting points will all match up to give a perfect fit. Complete the look of your car and give your sheet metal and engine compartment the protection it received from the factory with a fender liner replacement.
Part 51718043213 was found on the following vehicles: