OSRAM COOL BLUE INTENSE XENON VS STOCK. They do make a difference! Installation, comparison! 4K - YouTube
Amazon.com: OSRAM XENARC COOL BLUE INTENSE D1S, 150% more brightness, up to 6,200K, xenon headlight lamp, LED look, duo box (2 lamps), 66140CBN-HCB : Automotive
New Osram CBB bulb review - BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST
OSRAM Xenarc Cool Blue Intense Next Gen D1S Car Headlight Bulbs | PowerBulbs US