HID Bulbs come in a variety of different applications. For vehicles that came equipped with HID lights from the factory they use specific HID Bulb applications. Those applications are D2S, D2R, D1S, D1R, D4S, D4R, D3S and D3R HID Bulbs. If your vehicle did not come with HID lights from the factory and you have a HID Conversion Kit installed than the applications are different. We carry every application of HID KIT Replacement Bulbs available. The most common are 9006, 9005, 9007, H11, H10, H13, H4, H1, H3, H7, 880, 9004, 9145 and H11B HID Bulbs.