D1S D1R HID Ballast - Xenon Headlight Lamp Control Unit - Compatible with BMW 1 2 3 5 7 M5 X1 Z4 | Replaces: 63117237647 63117318327 - Motiv8

HID ballast for BMW 63117237647 & 63117318327 Electronic control unit for the voltage supplied to the headlights of BMW cars. A poorly operating HID ballast is most likely if your headlights are dim, changing colors, buzzing, or flickering. When inspecting the HID ballast, look for any visible signs such as burn marks, leaking oils, or a swollen casing which will be clear indicators that it is time for a new HID ballast. Our HID Ballast is precision engineered to regulate voltage from the vehicle's battery to the headlight for excellent nighttime visibility. Our HID Ballast is a direct match for the fit and performance of the original equipment HID ballast and has the following features: Direct Replacement - Plug & Play with no programming required. Direct OE replacement to ensure proper fitment and restore lighting performance Premium Materials -  Features high-quality materials to ensure proper operation and longevity Extreme Reliability - Electronics are of the highest qua