H7 LED Headlight Bulb Adapter Holder H7 Socket Base Fit for Mercedes-Benz E/ML Class New BMW 5 series(2014 up)/ X5 Audi A3/A4L/A6L

Why needs this adapter? After-market LED bulbs is usually bigger than stock halogen headlight bulb so the factory adapter would not fit over, and the LED bulb would not be secure without the holder to lock it in place. Our H7 retrofit socket base come with a bigger hole that was designed to fit for the LED bulbs. So for some vehicle owners, when install other aftermarket H7 led bulbs, they may need to buy this adapter to resolve the installation&fixed problem. Compatible Vehicles: (List only some vehicles) Mercedes-Benz E/ML Class New BMW 5 series(2014 up)/X5 Audi A3/A4L/A6L Volkwsagen New Sagitar/New Magotan/New Bora/ Passat B7 Buick Regal/Lacrosse/Excelle/Excelle XT   Nissan Qashqai Zhonghua Junjie And more... Features:  Special designed socket adapter for H7 LED headlight bulbs. Made of high quality metal material, heat resistance and durable. Used for H7 Halogen upgrade to LED bulbs installation, Easy to install, plug into your existing factory headlight a