Hella 9006/HB4 55W Halogen Headlight Bulb | DOT Approved

The Hella 9006/HB4 is a straight-up replacement halogen bulb for the low beams and fog lights on a huge range of cars, trucks, and SUVs. It runs 55 watts at 12 volts and puts out 1095 lumens of clean white light. The HB4 shape uses the P22d base, so if your factory bulb is a 9006, this drops right in with no adapters and no wiring changes.

Here's the honest version. A halogen bulb is a consumable. It'll dim slowly over a couple of years and then one night it just quits, usually in the rain, usually on the side you need most. When that happens you want a known-good replacement that matches the original spec instead of a mystery bulb that throws a weird color or a hot spot. That's what this is. Hella has been making vehicle lighting for over a century, and these are built to the original 9006 standard with a P22d base and a T4 glass envelope.

Installing one is a ten-minute job on most vehicles. Pop the hood, find the back of the headlight housing, and twist the old bulb holder counterclockwise to release it. Unplug the connector, swap the bulb, plug it back in, and lock the new one in place. The one rule that actually matters: don't touch the glass with bare fingers. The oil from your skin creates a hot spot that shortens the bulb's life. If you do touch it, wipe it down with rubbing alcohol before you power it up. Hold it by the base and you're fine.

This bulb is DOT, ECE, and INMETRO approved, so it's street legal for on-road use in the US, Europe, and Brazil. The 55-watt rating is the standard output your charging system and wiring are designed around, so you won't cook a connector or overload a circuit the way a high-wattage off-road bulb can. It draws about 4.58 amps at 12 volts, which is exactly what the factory bulb pulled.

One thing to know before you check out: this is a single bulb, sold one to a blister pack. Headlights work as a matched pair, and when one side burns out the other usually isn't far behind. Most folks buy two and replace both sides at once so the beams match in brightness and color. It's cheap insurance against a mismatched look and a second trip back under the hood a month later.

The 9006 is a single-filament bulb, which is why you'll find it in low-beam and fog-light positions rather than a combined high/low housing. If your vehicle uses a separate bulb for the high beam, that's typically a 9005/HB3, and the two are not interchangeable even though they look similar. So check the number stamped on your old bulb or printed in the owner's manual before you order.

In the fog, the clean white output matters more than raw brightness. A properly aimed 9006 in a fog housing throws a low, wide bar of light that lights up the road surface and the painted lines without bouncing glare back into your eyes off the mist. That's the whole point of a fog light, and it's why matching the original bulb spec beats a random upgrade that changes the beam pattern.

Who's this for? Anybody running a 9006/HB4 low beam or fog setup who wants to put the factory light output back without stepping up to an LED or HID conversion. If your housings were built for halogen, a halogen bulb is the clean, trouble-free answer. It fits the reflector, it aims correctly, and it won't throw glare at oncoming traffic the way a dropped-in LED often does.