Part number 51711810531 is a brand new, unused Genuine BMW part. 51711810531 is part of your BMW's trim. Parts like air channels, mud guards, and seals are important and serve a functional purpose. Damaged part should be replaced when they are detected.
Genuine BMW parts are typically available at BMW dealerships. These parts are used to service BMW's at your local BMW dealer and are the same parts that you can order and purchase at your local BMW dealer parts department. Genuine BMW parts are manufactured for BMW by some of the leading OE suppliers such as Bosch, VDO, ATE, and Hella. You can be assured that a part is Genuine based on a BMW stamping near the part number on the part itself.
Since 1986 FCP Euro has been provided high quality OEM and Genuine replacement car parts for European cars. With nearly 500,000 products in it's online parts catalog, FCP is the leading source for hard to find replacement parts.
Unlike many other automotive retailers that have special rules and limited return policy, FCP Euro offers unlimited hassle free returns, free shipping on orders over $49, and a industry leading lifetime warranty on all parts that they sell.