When shopping for LED headlight bulbs, you’ve probably come across the terms “single beam” and “dual beam”.
These refer to two different types of headlight bulbs. Because car lighting systems can vary from one model to another, it’s important to know how your headlight system works before making a purchase—this ensures you get the right bulb for your vehicle.
Still, many car owners are left wondering: What’s the difference between single and dual beam headlight bulb? Is H4 a single or dual beam? Does “single beam” refer to the bulb or the headlight assembly?
In fact, it’s not uncommon for customers to mistakenly buy a dual beam bulb for a headlight housing that only supports single beam.
In this blog, we’ll walk you through the key differences between single beam and dual beam headlight bulbs, how they work, and which one is right for your car. We’ll also answer some of the most frequently asked questions to help you avoid confusion when upgrading your headlights.