NEW ALTERNATOR FITS BMW 2007-10 335I L6 3.0L 2979CC 2011-13 335IS L6 3.0L 2979CC 12-31-7-557-789 12-31-7-558-219 100% NEW and Made with the Highest Quality Components Available Full One Year Warranty Computer tested for consistent Quality and unsurpassed reliability Alternator - Voltage: 12V Amperage: 180 Amps Regulator: Internal Source: Aftermarket