







🚦 Light Up Your Drive with Brilliance & Precision!
The Auxbeam B21 Series 3157 Switchback LED Bulbs deliver 600% brighter dual-color lighting with built-in CANBUS error-free resistors, advanced 4-layer cooling, and 360° full beam coverage. Designed for easy plug-and-play installation on standard US sockets, these bulbs provide instant-on white DRL/parking lights and vibrant amber turn signals, enhancing both safety and style with a lifespan of up to 60,000 hours.





























| ASIN | B0BZ45WLRZ |
| Auto Part Position | Front |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #9,055 in Automotive ( See Top 100 in Automotive ) #29 in Automotive Turn Signal Bulbs |
| Brand | Auxbeam |
| Color | Amber White |
| Customer Reviews | 4.3 4.3 out of 5 stars (2,299) |
| Date First Available | March 21, 2023 |
| Exterior | Polished |
| Fit Type | Universal Fit |
| Item Package Quantity | 1 |
| Item Weight | 2.39 ounces |
| Item model number | AUXBEAM-B21-3157 |
| Manufacturer | Auxbeam |
| Manufacturer Part Number | B21-3457-AW |
| Model | 3157 Switchback LED Bulbs |
| OEM Part Number | 3047, 3047R, 3057, 3057A, 3057R, 3057NA, 3157, 3157A, 3157R, 3157K, 3157NA, 3157NAK, 3157NALL, 3357, 3457, 3457A, 4057, 4057R, 4157, 4157A, 4157R, 4114, 4144, T25 |
| Operating Life | 60000 Hours |
| Package Dimensions | 5.98 x 5.83 x 1.46 inches |
| Voltage | 12 Volts (DC) |
M**T
Great Lights for the Price
I recently purchased the running light and turn signal light combo for my vehicle, and I must say, I am thoroughly impressed with its performance and functionality. This product truly offers the best of both worlds, providing a bright white running light for enhanced visibility during normal driving conditions, as well as an attention-grabbing amber turn signal light for when I need to indicate a lane change or a turn. One of the standout features of this product is its seamless transition between the white running light and the amber turn signal light. The transition is smooth and instantaneous, ensuring that other drivers on the road can easily recognize my intentions. This has significantly improved the safety aspect of my driving experience, as I feel more confident that my signals are clearly communicated to those around me. In terms of brightness, both the running light and turn signal light are exceptionally bright, making them highly visible during day and night. The white running light provides excellent illumination, enhancing my visibility to oncoming traffic and pedestrians. Meanwhile, the amber turn signal light grabs attention with its vibrant color, ensuring that my intentions are noticed even in busy traffic situations. The build quality of this product is also top-notch. It feels sturdy and durable, capable of withstanding various weather conditions and vibrations on the road. I appreciate the attention to detail in the design, as it seamlessly integrates into my vehicle's aesthetics without looking out of place. Overall, I am extremely satisfied with this running light and turn signal light combo. Its ability to switch between the white running light and the amber turn signal light is a game-changer for me. The brightness, durability, and ease of installation make it a fantastic choice for anyone looking to enhance their vehicle's lighting system. I highly recommend this product to fellow drivers who value safety and versatility on the road.
J**Y
WOW!!! Auxbeam 3157 amber/white switch back👍🏾
My 2013 Ford Taurus Auxbeam switchback turning signals are insane! I've been asked what I am running in my headlight housing because of how Bright the signals are by Taurus owners & other drivers who want them. Evening/Night video fully shows how great they are. People will know your intentions and that you are making a lane change & if your vehicle is disabled the hazard lights are equally insanely Bright! FANTASTIC PRODUCT! I finally have a legit daytime running light without having to use my headlight. I was running Lasfit but it was insufficient white light to use as a daytime running light because when the sun hit the front of the vehicle you couldn't tell if light was on. Finally, Auxbeam is the Brightest Amber & White switchback I've come across. Any questions feel free to Ask me. 2013 ford Taurus SEL 3157 bulb replacement absolutely no Hyperflash & no dashboard codes. They work perfectly & are a Superior Product. Well built and units look nice in headlight housing. 10 star 🌟 product.
D**Y
Hey no hyperflash
I like it. No codes popping up, no hyper flashing also its bright. Overall pleased.
D**D
Good Quality!
2013 Silverado 2WD WT. I use these as front turn signals. two on each side. They work flawlessly with no hyper flash. They burn bright white until you call for flasher then they switch amber. Back to white on signal cancel. Awesome way to brighten up an old work truck.
H**N
Bright
Bright as heck and work great. My only complaint is the built in resistor doesn’t always work so my truck will say lamp out most the time and occasionally I get the fast blinker
R**N
Amazing product
This is a great item! I couldn't quite understand how i could get 3 separate functions where my replaced single filament bulb had been. But it does work! And what a difference in brightness!
S**N
Does the job
My only gripe, I assumed this had a built in resister for no hyper turn signal flashes. Annoying but still doable. Creates the LED look a wanted without changing the entire housing. A bit long but fits perfectly. Very easy to install and great for the money. Will see how long they last.
A**S
NO HAY ERROR EN EL TABLERO AL INSTALARLAS.
A**I
My car is taurus, I have installed to my car, it is working fine dual function are working, it is really very nice, and recomended, I will observe until 2 week for the last review
R**Q
Looks great
H**K
Yes, it's not as bright as I expected. I had auxito for a similar price before and the brightness is 2x more than this auxbeam.
J**S
Instalado en luces de reversa sentra 2021 sense, he visto muchos productos de la marca y decidí probar por los buenos comentarios, los LED se ven y se sienten de calidad, vi anteriormente videos de la instalación y fue rápido, se nota el cambio de luz y un aspecto más cool, espero que duren mucho tiempo pero hasta ahora estoy satisfecho, no tienen polaridad y están funcionando correctamente
Trustpilot
3 weeks ago
1 month ago