---
product_id: 526238272
title: "Auxbeam B21 Series 3157 Switchback LED Bulbs Built in Resistor CANBUS Error F..."
brand: "auxbeam"
price: "B/.121"
currency: PAB
in_stock: null
reviews_count: 8
category: "Auxbeam"
url: https://www.desertcart.com.pa/products/526238272-auxbeam-b21-series-3157-switchback-led-bulbs-built-in-resistor
store_origin: PA
region: Panama
---

# 600% brighter output Advanced 4-layer cooling system Built-in CANBUS error-free resistor Auxbeam B21 Series 3157 Switchback LED Bulbs Built in Resistor CANBUS Error F...

**Brand:** auxbeam
**Price:** B/.121
**Availability:** ❌ Out of Stock

## Summary

> 🚦 Light Up Your Drive with Brilliance & Precision!

## Quick Answers

- **What is this?** Auxbeam B21 Series 3157 Switchback LED Bulbs Built in Resistor CANBUS Error F... by auxbeam
- **How much does it cost?** B/.121 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/526238272-auxbeam-b21-series-3157-switchback-led-bulbs-built-in-resistor)

## Best For

- auxbeam enthusiasts

## Why This Product

- Trusted auxbeam brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **360° Full Beam Coverage:** No dark spots or shadows—experience complete visibility that enhances your vehicle’s style and safety.
- • **Unmatched Brightness Boost:** 600% brighter LEDs for instant, eye-catching illumination that commands attention on the road.
- • **Dual-Color Switchback Magic:** Effortlessly switch between crisp white DRL/parking lights and vibrant amber turn signals for ultimate safety.
- • **Next-Level Thermal Management:** Silent 12,000RPM fan plus copper cooling ring and aviation-grade aluminum body ensure 60,000 hours of reliable performance.
- • **Plug & Play CANBUS Compatibility:** Seamless installation with built-in resistor eliminates hyper flash and error warnings—drive worry-free.

## Overview

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.

## Description

Buy Auxbeam B21 Series 3157 Switchback LED Bulbs Built in Resistor CANBUS Error Free Anti Hyper Flash T25 3057 3457 4157 Bulbs White and Amber 600% Super Bright Turn Signal Light DRL Parking Light: Turn Signal Bulbs - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: 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!
Review: 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.

## Features

- CANBUS ERROR FREE: Super compatible for standard sockets rather than CK sockets. No hyper flash, no warning. With built-in CANBUS system, the 3157 dual color bulbs can alleviate decoding problems. Note: NOT fit TOYOTA TUNDRA and TOYOTA TACOMA. For super few sensitive models such as Silverado, RAM 1500/2500/3500 and Ford F150/F250/F350, extra resistors are needed or get from us.
- 600% EXTREMELY BRIGHT: Sequencing 36Pcs Upgraded high brightness 3030SMD chips precisely around each 3157 led bulb, 28W per bulb, High Power and 600% brighter, providing 6500K Cool White light or 3500K Amber Yellow light. Instant-on response without warm-up time. More noticable when turning, guard your driving safety.
- DUAL COLOR FUNCTION: This 3157 switchback led bulb with resistor lights up cool white for parking lights or daytime running lights (DRL) but amber yellow for turn signal lights. Unlike most turn signals flashing "amber-white-amber-white" on the market, the Auxbeam 3157 turn signals flash "amber-off-amber-off", making it easier to see from a distance.
- 4-LAYER COOLING SYSTEM: IP68 waterproof and dustproof. The built-in stable current IC driver avoids digital or VHF radio signal interference. The latest cooling system - 12,000RPM silent fan + Copper cooling ring + 16Pcs heat sinks + 6063 aviation aluminum lamp body directly doubles heat dissipation, ensuring longer lifespan up to 60,000 hours.
- NOT FIT CK SOCKETS: Only compatible with US standard sockets. Please refer to the CK sockets precautions on the pictures. Designed to be polarity sensitive, and if the bulbs don’t light up, please flip the plug and try again. Fit socket 3157, 3157A, 3157NA, 3057, 3057A, 3457, 3457A, 4057, 4157, 4157NA, T25, etc. No drilling, no wiring, no damage, just Plug and Play.
- 360°FULL CLEAR BEAM: Each 3157 led bulb provides 360° full illumination without dark spot or shadow. If any questions or flashing issues, please message us for free solutions.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BZ45WLRZ |
| Auto Part Position | Front |
| Best Sellers Rank | #9,737 in Automotive ( See Top 100 in Automotive ) #29 in Automotive Turn Signal Bulbs |
| Brand | Auxbeam |
| Brand Name | Auxbeam |
| Color | Amber White |
| Customer Reviews | 4.3 out of 5 stars 2,280 Reviews |
| Fit Type | Universal Fit |
| Included Components | For super few sensitive models such as silverado, RAM 1500/2500/3500, Ford F150/F250/F350, extra resistors are needed or get from us., NOT fit CK sockets models like TOYOTA TUNDRA and TOYOTA TACOMA. |
| Item Package Quantity | 1 |
| Light Source Type | LED |
| Manufacturer | Auxbeam |
| Manufacturer Part Number | B21-3457-AW |
| Manufacturer Warranty Description | 1 Year Warranty |
| Operating Life | 60000 Hours |
| Package Quantity | 1 |
| Unit Count | 2.0 Count |
| Voltage | 12 Volts (DC) |
| Wattage | 28 watts |

## Product Details

- **Brand:** Auxbeam
- **Color:** Amber White
- **Item Package Quantity:** 1
- **Light Source Type:** LED
- **Wattage:** 28 watts

## Images

![Auxbeam B21 Series 3157 Switchback LED Bulbs Built in Resistor CANBUS Error F... - Image 1](https://m.media-amazon.com/images/I/71-E08XgcNL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Amazing product
*by R***N on December 12, 2025*

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!

### ⭐⭐⭐⭐⭐ Great Lights for the Price
*by M***T on June 8, 2023*

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.

### ⭐⭐⭐⭐⭐ Very bright
*by T***Y on December 24, 2025*

Very bright and super easy to install

## Frequently Bought Together

- Auxbeam B21 Series 3157 Switchback LED Bulbs Built in Resistor CANBUS Error Free Anti Hyper Flash T25 3057 3457 4157 Bulbs White and Amber 600% Super Bright Turn Signal Light DRL Parking Light
- Auxbeam T25 3156 3157 LED Bulbs, 6500K White, Super Bright 4114 3057 4157 3457 4057 LED Backup Reverse Lights for Cars Trucks Motorcycles, 3030-SMD 12V, Pack of 2
- Auxbeam H10 9140 9145 Fog Lights, 10000LM 600% Brighter H10 9040 9045 Fog Light, 6500K White Strong Light Penetration, Super Bright Plug and Play

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.com.pa/products/526238272-auxbeam-b21-series-3157-switchback-led-bulbs-built-in-resistor](https://www.desertcart.com.pa/products/526238272-auxbeam-b21-series-3157-switchback-led-bulbs-built-in-resistor)

---

*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-02-05*