For BMW 3 Series E46 320d / 318i / 325Ci 3570 H7+501 Front Headlight Side Light

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.

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