How to Pick the Right Bulb Size? Check your owner’s manual, the part number on your original bulbs or search “automotive bulb look-up” online. Select your vehicle model in the filter system of the product detail page to double check the fit. Refer to the “Notes”. Such as: “Notes: Low Beam Headlight(w/halogen capsule headlamps)” means our bulb fits your car as Low Beam only if your car comes equipped with halogen capsule headlamps. Warm Tips: The filter system may not be 100% accurate or up to date, if you are not sure about the size, please confirm with us before purchasing. Our bulbs can function as Low Beam, High Beam or Fog Light as long as the bulb size matches. Most vehicles take separate bulbs for High Beam and Low Beam function(total 4 bulbs), they may be the different bulb size which need to be purchased separately. Please note: 1. Please be sure your original bulb is D1S, if your original is D3S but install D1S bulb, it will . 2. If you have any question, just feel free to contact us, We will response within 48 hours. Wattstar D1S6000K hid xenon headlight Bulbs Specification: *Brand:Wattstar *HID Headlight Bulbs Type:D1S *Power:35W *Input Voltage:DC 12 V *Luminous Intensity: 6400LM(pair) *Kelvin：6000K *Waterproof:IP68 D1S headlamp bulbs’Features: 3 times luminous flux as that of stock halogen lamp Longer using lifetime :up to 3,000 hours Color temperature Reference: 4300k(Warm white), 6000k(pure white), 8000k(cool white) Wattstar D1S 35W 6000K headlamps Package Including: 2 *D1S 6000K HID Xenon headlight Bulbs in original box;