BMW F25 Xenon Headlight Ballast Module 63117421578 OEM Replacement

BMW F25 X3 (2011-2017) owner: Xenon ballast module (OEM 63117421578) is a direct replacement; KLP brand fully compatible without modification. Core function is to stabilize xenon bulbs, solving start delay, one-side outage, or frequent flicker. If headlights show red, flicker, or light failure warning, replace this module; easy plug-in replacement.