Although H11 and 9006 are the same as single filament, the interface design is very different: H11 adopts a wedge base, and 9006 needs to be fixed by a rotary latch. Fog lights are dedicated to H11 to strengthen rain and fog penetration, while the 9006 specializes in low-beam road precision light. Forced mixing may result in loose clips, shifted focus, or even melted lamp bases! Want to learn more about the differences between H11 and 9006 bulbs? Read on for a detailed comparison.

Is h11 the same as 9006? Here are the differences between the H11 and 9006.
Brightness Differences
Parameter |
H11 (Halogen) |
9006 (Halogen) |
Lumen Output |
1,350 Lumens |
1,000 Lumens |
Color Temperature |
3,000K (Warm Yellow) |
3,200K (White-Yellow) |
Effective Range |
Fog Mode: 30 meters |
High Beam: 150 meters |
Key Takeaways:
H11 halogen bulbs prioritize high lumen output and warm color temperature for fog penetration.
9006 bulbs sacrifice brightness for long-range projection in high-beam applications.
Socket Bases
Feature |
H11 |
9006 (HB4) |
Pin Shape |
Flat single pin (1.5mm thick) |
Round single pin (2.0mm diameter) |
Locking Mechanism |
Three-point twist lock |
Two-point push lock |
Pin Spacing |
9.5mm |
10.5mm |
It is obvious from the inside the table that the 9006 and H11 have different pin shapes and bases and that the pins of the H11 bulb are closer together than those of the 90006.
Longevity and Durability
In terms of lifespan, H11 halogen bulbs are longer; they can light for up to 1,000 to 2,000 hours, while 9006 bulbs have a shorter lifespan, between 500 and 1,000 hours. In terms of durability, they are generally good but need to be replaced more frequently. Longevity and durability are key factors to consider when choosing the best replacement bulb.
Beam Patterns
Beam Characteristic |
H11 |
9006 |
Primary Function |
Fog: Wide, short-range scatter |
High Beam: Narrow, long-range focus |
Horizontal Spread |
120° |
45° |
Optical System |
Dedicated fog reflector (no lens) |
High-beam lens (anti-glare design) |
In terms of beam patterns, the H11 is used for fog lights and emphasizes a wide, short diffusion, while the 9006 is used for high beams and is a concentrated, long-distance beam.
How to choose the right H11 and 9006 bulbs
Confirm the original bulb model
First, find and confirm the bulb size you need from your vehicle's manual.
Alternatively, you can use the RIMTHIN Bulb Finder to find the bulb size of your vehicle by entering the make, model, and year of your vehicle.
Of course, you can also find the bulb number from the bulb base, which is the most convenient and accurate method.

Choose the bulb according to the usage scenario
Scenario |
Recommended Bulb |
Key Advantage |
Frequent rain/fog |
High lumens (1,300+), 3,000K warm light cuts through fog |
|
Nighttime highway driving |
200+ meter beam range, reduced driver fatigue |
|
Urban commuting |
Stick with OEM |
Avoid compatibility risks, cost-effective |
NHTSA studies show that LED high beams (e.g., 9006 LED) reduce nighttime crashes by 18% but require anti-glare lenses.
Upgrading an H11 or 9006 from halogen to LED requires the following considerations.
Beam Patterns
The light distribution of LED and HID bulbs differs from that of halogen bulbs. The beam pattern is the way the light is distributed on the road. An inaccurate beam pattern can cause glare for the driver, which in turn increases the risk of an accident. To avoid such problems, choose bulbs with the correct beam pattern.
Socket Compatibility
When replacing automotive bulbs, it is important to make sure that if you choose an LED or HID bulb, it is compatible with your vehicle's socket. Some vehicles may require special connectors or wiring harnesses to fit these bulbs. HID bulbs, in particular, often require additional special wiring to function properly.
The installation process
The ease of installation varies from LED bulb to LED bulb, and several factors, such as the size of the bulb, the design of the headlight housing, and the model of your vehicle, can all have an impact on the installation process. On the market, LED bulb installation is generally easier for most manufacturers. For example, RIMTHIN LED bulb installation can be found in the RIMTHIN installation manual.
Frequently Asked Questions about H11 vs. 9006
F: Are h11 and 9006 the same?
A: No. 9006 bulbs are usually used in low beam or high beam lighting systems in cars; they have painted heads and are generally used as fog lights with 55W power and a standard HB4 socket base. While H11 bulbs are generally used for low beam lights, some models of low beam lights will use H11 bulbs, which have a power of 55W and a base with an oval socket with 1 longer convex tooth on the lower edge. Therefore, there are obvious differences in their use and base structure, and they can not be common.
F: Can I use 9006 instead of H11?
A: Not a direct replacement. 9006 (HB4) and H11, although similar in appearance, have different base designs and power and light patterns, which may result in poor mounting, overloaded circuits, or lighting that does not meet safety standards. It is necessary to refer to the vehicle manual or consult a professional to confirm compatibility.
F: Difference between 9006 and h11
A: The shape/position of 9006 and H11 inserts are different. Secondly, the power/current is also different; H11 is usually 55W, and 9006 is 51W. Mixing may affect the circuit or brightness. There is also a difference in focusing angle, and incorrect mixing can lead to astigmatism or non-compliance with safety standards.
F: What bulb is the same as H11?
A: Bulbs with the same base as the H11 include the H8, H9, and H16, with compatible physical interfaces but different wattages (H11 is typically 55W). Vehicle suitability should be noted, and voltage and power requirements should be confirmed before replacement.
F: What bulb is the same as a 9006?
A: The same bulb model as the 9006 is the HB4; both are used interchangeably and are primarily used in automotive low beams. Some brands may be labeled 9140 or 9145; refer to the vehicle manual.
Summary and Recommendations
H11 and 9006 bulbs, as common light sources for automotive headlamps, differ significantly in their functional characteristics: H11 bulbs are characterized by their wide-angle illumination range and longer durability, while 9006 bulbs have unique advantages in terms of light intensity and throw distance. There are three core elements to be evaluated when choosing a lamp: lampholder suitability, light distribution characteristics, and light source technical parameters. For consumers seeking to upgrade their lighting, new light sources with LED or HID technology are recommended. These modern lighting solutions not only significantly improve energy efficiency performance but also reduce the frequency of maintenance with their long service life. Car owners are advised to prioritize the selection of certified high-quality lighting products according to their vehicle's fitment specifications.