9003 Light Bulb


The 9003 automotive bulb is a popular replacement part for headlights, as well as high and low beam lamps. It is a dual beam lamp with two filaments, one for high beam and one for low beam. The bulb utilizes halogen technology and has a nominal power of 12 volts and 60/55 watts. It is commonly used in both projector and reflector headlights. The usual lifespan of the 9003 bulb is around 2 years.

The name 9003 is deciphered as follows: the first number (9) refers to the bulb's diameter in millimeters, while the second number (003) is a code for the bulb's shape and base type. In this case, the 003 code indicates a bulb with a H4/9003 base.

The 9003 bulb produces around 1350 lumens and has a color temperature of 3200K. It is interchangeable with other bulb types such as H4 and HB2.


The 9003 light bulb family is interchangeable with the following bulbs