OKAY MOTOR Intake Manifold Adjusting Unit DISA Valve for BMW E46 (M56) E39 E53 E60 E83 3.0L BMW 3.0L Adjusting Unit for Intake Manifold (DISA Valve) Part number: 11617544805, 11617502275 New Aftermarket Replacement Unit. 180-days Manufacturer Type Warranty Limited. Please Note: this Adjusting Unit only works on a E46 with M56 engine, for M54 engine part # 11617544806 is needed.