Genuine Factory BMW amplifier used in many E92 models. See individual offerings as there may be other compatible numbers, retrofit and supersessions as follow: E92 - 5/2006-11/2010 USA 65.12 - 9 143 162 Removed from salvaged 2007 328xi 2dr COUPE .. When you are buying used to save cash for your used car you must do some research on your 'part'. You MUST get the number from your existing unit to cross-reference to one of the interchanges on the Product Detail Page ......stk#41618 Additional Details ------------------------------ Department: AUTOMOTIVE Package quantity: 1