H11 vs H11B: What’s the Difference and Which One Should You Choose?

If you’ve ever wandered into an auto parts store or browsed online for replacement LED bulbs, you’ve probably come across the familiar H11 vs H11B models. But wait—H11? H11B? They sound like siblings, but are they? And if they are, why does it feel like one is the more “exclusive” family member?

Well, buckle up because we’re about to break it down for you. The H11 vs H11B LED bulbs may look alike, but they actually have some key differences that can make your headlight shopping experience a lot trickier than it needs to be. Let’s dive into the details.

H11 LED Bulb

The H11 is the most common, everyday kind of bulb. It’s what your car probably came with when you bought it, and it’s the reliable workhorse of the automotive lighting world. It’s the bread and butter of low-beam headlights, fog lights, and sometimes DRLs (Daytime Running Lights). You walk into any auto parts store, and there’s a good chance you’ll find at least one shelf full of H11 bulbs

H11B LED Bulb

Enter the H11B—H11’s seem likely to be the same. The H11B looks just like the H11. In fact, you could easily mistake them for twins. But are they? Oh no. Oh, no no no. They’re not twins, they’re more like… complicated cousins with subtle differences that only reveal themselves after hours of Googling, deep-dive forums.

On the other hand, the H11B LED bulb is more specific in its fitment. The “B” in H11B isn’t just a random letter. It signals that this bulb is tailored for a narrower selection of vehicles, often those with unique electrical or physical space constraints. The H11B is typically used in specific car models and sometimes in older vehicles or those with stricter electrical specifications.

For example, certain European or Japanese cars might use the H11B as a stock bulb because of the particular way the electrical system is designed. If you have an H11B socket in your vehicle, an H11 bulb may not fit, and vice versa.

Differences Between H11 vs H11B

The main difference between the H11 and H11B bulb models lies in their base connectors. The H11 bulb features a standard base connector, while the H11B bulb has a unique connector base that is not interchangeable with the H11 bulb. It is crucial to verify the correct bulb type for your vehicle to avoid compatibility issues. The H11 bulb features a standard single-prong base, while the H11B bulb has a different base with slightly different dimensions.

Boslla 180W of H11 vs H11B LED Bulb Comparison

Boslla 180W H11 vs H11B	H11	H11B
Beam	Low Beam, Fog Lights	Low Beam
Also called	H8/ H9	N/A
Brightness	21600LM	21600LM
Lifespan	Up to 50,000 Hours	Up to 50,000 Hours
Wattage	180W/ Per Set	180W/ Per Set
Material	6063 Aluminum Alloy	6063 Aluminum Alloy
Cooling Fan	10,000 RPM	10,000 RPM
Waterproof Grade	IP67	IP67
Colors	6500K White	6500K White

Upgrade Your Halogen H11 or H11B to LED

If you are looking forward to upgrading your halogen H11 or H11B with the best brightest, and most durable LED bulbs, We provide super brightness of 180 watts and 21600 lumens LED bulbs. Upgrade to Boslla 180 watts and 21600 lumens LED bulbs you will no longer be afraid of driving in the dark!

Can We Use an H11 Bulb in place of an H11B Bulb?

It’s not recommended. Using the wrong bulb type can lead to suboptimal lighting and might even cause issues with fit and function.