9005 vs. 9006 Bulbs Explained: What Are the Differences
Trying to understand the difference between 9005 and 9006 bulbs? These similar numbers can be tricky to tell apart. Is one better? Brighter? For high or low beams? This guide will answer all your questions about 9005 vs 9006 bulbs and explain the key differences between the two.
Difference Between 9005 and 9006
To quickly learn the differences between 9005 and 9006 headlight bulbs, check the table below.
Bulb Size | 9005 | 9006 |
Base Type | P20d | P22d 90° |
Wattage | 65 | 55 |
Lumen | 1700 | 1000 |
Lifespan | 320 Hours | 1000 Hours |
Main Beam Type | High Beam | Low Beam, Fog Light |
Cross Reference | HB3 | HB4 |
Base
The 9005 bulb comes with a P20d base, while the 9006 bulb features a P22d 90° base. This difference in base design affects the bulbs' compatibility with different headlight assemblies.
The bases of 9005 and 9006 appear nearly identical, but their smallest tabs are reversed - it turns clockwise on the 9006, and counterclockwise on the 9005.
This opposite tab direction is an important detail that prevents accidentally swapping the bulb types.

Connector
Both 9005 and 9006 headlight bulbs feature sockets with pins enclosed in the socket. And the distance between the two pins in the 9005 and 9006 sockets is almost the same.
Wattage
When it comes to wattage, the 9005 bulb uses 65 watts, whereas the 9006 bulb uses 55 watts. This difference in wattage contributes to variations in brightness and energy consumption.
Brightness
In terms of brightness, the 9005 halogen bulb outshines the 9006, emitting 1700 lumens compared to the 9006's 1000 lumens.
Primary Usage
The 9005 bulb is mainly used for high beams, offering brighter and more direct light. On the other hand, the 9006 bulb is primarily used for low beams, providing wider and less intense illumination.
Lifespan
The 9005 halogen bulb has a lifespan of around 320 hours, while the 9006 halogen bulb can last for approximately 1000 hours.
However, many factors impact how long a headlight bulb actually lasts, including driving frequency, driving conditions, etc.
Different Cross-compatibility
The 9005 bulb is cross-referenced with HB3, and the 9006 bulb is cross-referenced with HB4.
Lighting Technology
Both 9005 and 9006 bulbs come in standard halogen forms. However, they are also available in LED lighting upgrades, providing numerous aftermarket options for users seeking more advanced lighting solutions.
If you consider upgrading to 9005 or 9006 LED bulbs, check our collections below:
9005/HB3 LED Headlight Bulbs
9006/HB4 LED Headlight Bulbs
9006 LED Fog Light Bulbs
In summary, 9005 and 9006 bulbs have a very similar single-filament halogen design. However, their different sizes mean they cannot be swapped between headlight housings. The 9005 bulb has higher wattage, making it better suited for high beams. Meanwhile, the lower powered 9006 mostly found in low beam applications.
Is one better than the other? No. Bulb size itself does not affect quality. The only factor to consider is your vehicle's compatibility when choosing between 9005 and 9006. We will discuss this in more detail later.

9005 and 9006 Headlight Bulbs Explained
What is a 9005 Bulb
A 9005 bulb is typically used for high beams. It's a single-beam bulb, which means it has one function: to provide high-intensity light for long-range visibility. Its design is optimized to project light forward, making it an excellent choice for rural or poorly lit conditions.
What is a 9006 Bulb
Meanwhile, a 9006 bulb is generally used for low beams. It's also a single-beam bulb, but it disperses light widely rather than focusing it forward. This spread of light illuminates the road directly in front of the vehicle and to the sides, providing the right lighting for regular driving conditions.
Understanding High Beam and Low Beam Applications
Explanation of High Beam and Low Beam
High beams, also known as main beams, provide bright, long-range illumination. They're designed to maximize visibility when driving in rural or poorly lit conditions.
On the other hand, low beams, also known as dipped beams, cast a lower, shorter, and wider light. They're your everyday headlights, used for most driving conditions, including in cities and towns.
Are Low Beams and High Beams the Same Bulb?
While high beam and low beam headlights are housed in the same headlight assembly, they don't always use the same lightbulb. The setup depends on your car's headlight design.
Older vehicles had separate bulbs for high and low beams. For example, if you lookup your headlight bulb types and see 9005 and 9006, you have distinct bulbs, with 9005 for high beam and 9006 for low beam.
Nowadays, most cars have dual filament bulbs. Inside one bulb are two filaments - one for low, one for high. Flip between beams and you alternate filaments.
How to Choose the Right Headlight Bulbs
Check the Compatible Bulb Size: Always refer to your vehicle's manual or check the existing bulb's base to determine the right size. Here at SEALIGHT, you can enter your vehicle’s year, make, and model to find the exact bulb size for your vehicle easily.
Choosing LED Headlight Bulbs:
When opting for LED upgrades, consider factors like:
- LED headlight beam type : Choose LEDs that replicate your halogen bulb shape and filament position to maintain light projection.
- Brightness: LEDs offer varying brightness levels. Choose one that suits your driving conditions. This guide helps you to select the brightest LED headlight bulbs.
- Ease of Installation: Several aspects influence the installation process, including the bulb base, cooling system, polarity, and power source. Learn how to select the right plug-and-play LED headlight bulbs.
- Heat Management: LEDs can get hot. Ensure the 9005 or 9006 headlight bulb you select come with proper heat dissipation mechanisms.
Last Words
Navigating 9005 vs 9006 headlight bulbs can be confusing. This guide aims to clear things up so you can select the proper replacement. Looking to upgrade from dull halogens? SEALIGHT offers affordable 9005 and 9006 LED headlight bulbs, plus combo packs with both. Our LEDs deliver crisp bright white light to dramatically improve nighttime visibility. Visit SEALIGHT today to discover the perfect LED headlight upgrade for your needs.
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