H4 BIXENON Replacement Bulb - 3000K - H4-3

The H4-3 bulb is a common format used in many vehicles. The designation "H4" refers to the bulb classification under automotive lamp standards. The "3" in H4-3 indicates this bulb has an automatic switching function between low beam and high beam.

The xenon technology used in these bulbs produces a very bright, crisp light that improves visibility when driving at night. Bi-xenon H4-3 headlights are designed to allow easy switching between low and high beams, so the light can be adjusted to different driving conditions.

Bi-xenon H4-3 bulbs consist of a glass bulb containing high‑pressure xenon gas and two electrodes. When electrical current is applied inside the bulb, a plasma discharge occurs in the xenon gas, producing intense light. This light is then reflected and focused through a series of lenses and reflectors within the headlight unit to project a beam onto the road.

The distinguishing feature of bi-xenon H4-3 bulbs is their ability to switch between low and high beam without the need for a second bulb. This is achieved by a mechanical or electronic system that adjusts the filament position inside the bulb to provide the desired beam.

In summary, a bi-xenon H4-3 bulb is an automotive headlight lighting solution that uses xenon gas technology to produce an intense, well‑focused light. Thanks to its low/high beam switching capability, it offers improved visibility and safety when driving at night.

3000K - H4-3