4 series, coronas on xenon vs led headlights - BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST
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Amazon.com: VehiCode D4S D4R LED Headlight Conversion Kit - 70W 8400Lms 6000K White and Compatible with Ballast of D4S D4R D4C Xenon HID Headlight Bulb - CanBus Error Free Replacement (2 Pack) : Automotive
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