For BMW 3 Series E90 318d H7 501 3570 LED Main/Dip+Side Lamp 4 Bulbs UK STOCK

If your H7 bulb uses an adapter ring (or Retainer) behind the bulb for lock in into the lamp's socket, this H7 LED bulb will not work without a right "LED H7 retainer" for your vehicle. If there is a retainer on the factory H7 bulb, you will need to replace the retainer with a H7 LED retainer for your vehicle.

eBay