Genuine BMW Turbocharger With Exhaust Manifold - 11657635803 - This genuine BMW turbocharger with exhaust manifold is designed to provide increased power and performance for your BMW. The 11657635803 turbocharger features a precision-machined aluminum housing, stainless steel turbine wheel, and high-grade ceramic bearings. It is designed to fit the BMW N54 and N55 engines and is an ideal upgrade for your BMW.