Similar to headlight, the fog light is designed to light the road for you, especially in a foggy day. And the fog light is located at the front of the car. Why there is a fog light? When the normal light hits fog, it is reflected back to you, and you cannot see anything at all. But fog light is different. Instead of light into the fog, the fog light lights under the fog and makes a better visibility for you. Same as the headlight, the fog light also has light cover and fog light bulb, and either of them is indispensable. For you safety, you need to drive with a good-performance fog light bulb and also it breaks the law and you will the get the fine ticket when you are driving with a broken fog light bulb. Before the easy replacement, you need to have one. We offer you all Subaru genuine OEM fog light bulb with a beautiful cheap price.