An H3C is a single filament bulb, shorter than an H3 and the one which is usually installed in the fog lights. Do not lose the chance and upgrade the lights right now! Kensun offers 2 types of HID kits. Why HIDs? Xenon lights are 3 times brighter than your factory halogen bulbs. Even with the 35W kit installed you can feel the difference. The 55W sets are available also. They are 20% brighter than 35W kits. The other feature of the HIDs is that they are using 35% less power than OEM halogen lights. You will be pleasantly surprised with the variety of available colors. If you are looking for something extraordinary, you can choose Green or Pink lights.