BMW DISA valve repair kit - New DISA diaphragm Suitable for BMW engines: M54, M52TU, M56 Originally sold only entire valve assembly, we sell the membrane for bmw disa valve separately! The new DISA BMW unit costs about $ 250. Our company offers the only true solution – the replacement of the diaphragm for a new one, which will restore the efficiency of the node for changing the geometry of the intake manifold of BMW Disa. BMW DISA valve repair kit x5 (only membrane) with engine m54. Package Includes: 1 x DISA diaphragm