This is a replacement diaphragm (membrane) for the vacuum pump used on BMW N55 and N63/N63TU engines, a component that fails over time from heat, vibration, and constant flexing and causes a loss of brake and climate-control vacuum assist. Made from high-quality material to original dimensions, it is sold as an individual part so the pump can be rebuilt without replacing the entire vacuum pump assembly.

Fitment: BMW 1, 3, 5, 6 and 7 Series, and X5, with the N55, N63 or N63TU engine, covering the F20, F30, F10, F12, F01 and F15 chassis.