H4 and HB4 are both types of halogen bulbs that are commonly used in automotive headlights. However, there are some key differences between the two.
Main Differences between H4 and Hb4
First, let’s define what each type of bulb is. H4 bulbs are dual filament bulbs that are used for both high and low beam headlights. They have a three-pronged connector that fits into the headlight assembly. HB4 bulbs, on the other hand, are single filament bulbs that are used only for low beam headlights. They have a two-pronged connector that fits into the headlight assembly.
One of the main differences between H4 and HB4 bulbs is their brightness. H4 bulbs are generally brighter than HB4 bulbs, which is why they are used for both high and low beams. HB4 bulbs, on the other hand, are typically used only for low beams because they are not as bright.
Another difference between the two is their energy consumption. H4 bulbs consume more energy than HB4 bulbs, which means that they can drain the battery more quickly. However, they also provide more light, which can be an advantage in certain situations.
In terms of cost, H4 bulbs are generally more expensive than HB4 bulbs, partly due to their higher brightness and dual filament design.
In summary, H4 bulbs are dual filament bulbs that are used for both high and low beam headlights, are brighter, consume more energy, and are generally more expensive. HB4 bulbs, on the other hand, are single filament bulbs used only for low beam headlights, are not as bright, consume less energy, and are generally less expensive.