I have a 2011 BMW X3 (xDrive 35i, F25 chassis/frame, N55 engine). A non-BMW service center replaced my leaking valve cover gasket, but that broke an old repair where the MAP (Manifold Absolute Pressure) sensor was attached to the manifold intake hose. So they also replaced the manifold intake hose. They said it was difficult for them to find the correct hose and eventually bought it from the dealer.