H11 vs H8 vs H9 Bulbs - What’s the Difference?
H11 , H8 , and H9 bulbs all come from the same L-shaped halogen bulb family, so they can look almost identical at first glance. But this doesn’t mean that they’re interchangeable. Each bulb uses a different wattage and produces a different amount of light. The small tabs and connectors are there for a reason: they help prevent the wrong bulb from going into the wrong housing. And yes, it’s true that you can modify a bulb to fit, but the lamp housing, wiring, connector, fuse, and beam pattern may not suit the change. A bulb might click into place, but that doesn’t mean that the housing was built for the extra heat or the way that bulb throws light onto the road. What are the core technical differences between H11, H8, and H9 bulbs? An H8 bulb usually runs at a lower wattage and produces less light, while an H9 bulb produces much more output but also runs hotter. So the main difference between these bulbs really comes down to power and l...