They use filaments of glowing halogen gas to create their light; modern halogen bulbs are much brighter and longer lasting than they used to be. They use a number of H fittings (for example, H4 bulbs) ...
In fact, we’ve got a full guide to the different types of headlight bulbs available. The H7 bulb was introduced as an improvement on the H4 bulb. The “H” refers to halogen. These bulbs contain a ...
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