Actual products · Independent testing

Find the best bulb for your headlight type

Compare BulbFacts-tested LED, halogen, HID, and Xenon products using measured output, beam pattern, color, power, heat, and fitment context.

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Independent product testing

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Choose the category that matches the bulb already in your vehicle or the upgrade path you are researching.

LED headlight detail
175+ LED Upgrade Kits Tested

Aftermarket LED

LED conversion kits tested in real reflector and projector housings for output, beam pattern, color, power, heat, and installation behavior.

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Context

Product reviews

Read the measurements alongside beam behavior, installation, and ownership notes.

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BulbFacts evaluating headlight bulbs on the test bench
Products installed and measured in real housings
BulbFacts measuring headlight illumination on a dark road with a lux meter
What is actually tested

The beam matters as much as the number.

A brighter bulb is not automatically a better headlight. BulbFacts checks where the output lands and how the product behaves in the housing.

  • Light output

    Lux and lumen measurements compared against controlled reference points.

  • Beam pattern

    Low and high beams photographed in reflector and projector housings.

  • Color, power, and heat

    Color temperature, wattage, heat, noise, and electronics measured where relevant.

  • Independent conclusion

    Recommendations based on observed test results rather than manufacturer rankings.

Read the testing process
Before you buy

Confirm your bulb size and headlight system before buying.

Get upgrade help

A matching bulb size does not by itself prove conversion compatibility.