You'll probably be glad you bought a really nice looking LED headlight bulb. However, it would be frustrating if you couldn't fit them into your vehicle due to the large size of the bulbs. Bulb size is a very important factor for LED headlight bulbs, both for consumers and sellers. Without the smaller size and proper shape of LED headlight bulbs, it would be difficult to fit the bulbs into the headlight assembly of most vehicles. Now, Trent is sharing some details on headlight bulb sizes to help you find the right product.

Why must the design size of the LED headlight modification kit be appropriate?
Compared to halogen bulbs, LED headlight bulbs are not a standard product. Therefore, factories can design various shapes, structures, sizes for their LED headlights. However, the bulb size cannot be designed arbitrarily, because all car headlight components are designed based on factory halogen bulbs. The smaller the LED headlight, the easier it is to install.

On the other hand, in order to obtain higher brightness, the design of LED headlight bulbs is limited by the heat dissipation capacity, the larger the aluminum part, the better the heat dissipation effect of the bulb. So LED headlight bulbs can't be very small, except for OEM style LED headlights.

How can I tell if the bulb is the right size?

1.Overall lamp size

• The diameter of the bottom of the bulb should be within 38mm.
• The height of the bulb should be as close as possible to a halogen bulb, especially the distance from the base to the bottom.

2.The distance between the lamp holder and the bottom.

• Some factories have shortened the top of the bulb in order to shorten the height of the bulb as much as possible, but the distance between the socket and the bottom is still very large.