Auxbeam 921 LED Reverse Light Bulb White, Size 912/921 — 4000LM 6500K Canbus Compatible

These Auxbeam 912/921 LED reverse light bulbs are engineered to upgrade a vehicle's backup illumination with high-intensity SMD arrays, efficient power use, and a compact shape that fits original lamp holders. Built with an aviation-grade aluminum body and an intelligent driver chip, the bulbs offer fast activation, extended lifespan, and built-in Canbus compatibility to prevent dashboard warnings on most cars.

How much brighter and whiter is this compared with stock halogen bulbs?

The Auxbeam LED uses multiple high-output SMD chips to produce a daylight-like 6500K color and dramatically higher lumen output. Expect a perceptible increase in brightness and visibility when reversing at night or in low-light situations.

• About 400% brighter light output compared to typical halogen reverse lamps.
• Approximately 4000 lumens per bulb with 6500K xenon-white color temperature.
• Low power draw: roughly 5.5W per bulb—significantly lower than halogen counterparts.

Will these LEDs fit my vehicle and are they easy to install?

The bulbs are manufactured to match the size and socket form of common halogen reverse lamps for straightforward, tool-free installation. They use a non-polarity design so most users can plug them in without worrying about orientation.

• Direct 1:1 replacement for T15/912/921/922/906/904/902/W16W/916 sockets.
• Non-polarity plug-and-play setup: no rewiring for most cars.
• Fits original lamp holders for a neat, factory-like installation.

Do these bulbs cause Canbus errors or electrical interference?

Auxbeam integrates an intelligent decoder and Elecsy-X IC driver to stabilize voltage and temperature, which reduces the chance of erroneous warning messages. The driver also mitigates interference that can affect radio signals.

• Built-in Canbus-compatible decoder for error-free operation on many vehicles.
• IC control prevents radio-frequency interference and protects the circuit.
• Designed for broad compatibility across European, American, Japanese, and Korean models.

How durable are these LEDs—what about heat and lifespan?

Construction focuses on long-term reliability: an aluminum housing dissipates heat quickly while the internal driver maintains stable operation. The result is a much longer service life compared with incandescent bulbs.

• Robust aviation-grade aluminum body for efficient cooling.
• Rated up to roughly 50,000 hours under normal conditions.
• Stable electronic regulation reduces thermal stress and premature failure.

Who is this for? Drivers who want a brighter, cleaner-looking reverse light without modifying wiring or triggering dashboard faults will benefit most. Installers and DIY car owners seeking a quick plug-and-play upgrade that conserves energy and lasts far longer than halogen bulbs will find this product especially useful. It’s ideal for owners of cars that accept T15/912/921-style lamps and for anyone looking to improve nighttime visibility while reversing.