--- product_id: 566900773 title: "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" brand: "auxbeam" price: "€ 89.69" currency: EUR in_stock: true reviews_count: 5 category: "Auxbeam" url: https://www.desertcart.it/products/566900773-auxbeam-b21-series-3157-switchback-led-bulbs-built-in-resistor store_origin: IT region: Italy --- # 600% brighter output Dual color switchback tech 4-layer cooling system 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 **Brand:** auxbeam **Price:** € 89.69 **Availability:** ✅ In Stock ## Summary > 🚗 Light Up Your Drive, Stand Out in Every Signal! ## Quick Answers - **What is this?** 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 by auxbeam - **How much does it cost?** € 89.69 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/566900773-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 - • **Next-Level Cooling:** Advanced 4-layer cooling with silent 12,000RPM fan & copper ring ensures 60,000 hours of reliable performance. - • **Safety Meets Style:** 360° full lighting coverage with anti-hyper flash tech keeps you noticed and protected on every drive. - • **Blinding Brightness:** 600% brighter with 36 premium 3030 SMD chips delivering crisp 6500K white & vivid 3500K amber light. - • **Seamless Dual Color:** Instant switchback from cool white DRL to amber turn signals with clear 'amber-off' flashing for max visibility. - • **Plug & Play Perfection:** Fits 99% of vehicles with no extra resistors needed—CANBUS error-free and zero radio interference. ## Overview The Auxbeam B21 Series 3157 Switchback LED Bulbs deliver ultra-bright dual-color lighting with 600% more brightness than stock bulbs. Featuring a cutting-edge 4-layer cooling system and built-in CANBUS error-free resistor, these bulbs offer instant, seamless switching between cool white running lights and amber turn signals. Designed for easy plug-and-play installation, they fit 99% of vehicles and provide up to 60,000 hours of durable, vibration-resistant illumination—perfect for millennial professionals who demand safety, style, and tech-savvy performance on the road. ## Description 3157 switchback led, 3157 led bulb amber led, 3047 switchback bulb, 3047r switchback bulb, 3057 switchback bulb, 3057a switchback bulb, 3057r switchback bulb, 3057na switchback bulb, 3157 switchback bulb, 3157a switchback bulb, 3157r switchback bulb, 3157na switchback bulb, 3357 switchback bulb, 3457 switchback bulb, 3457a switchback bulb, 4057 switchback bulb, 4057r switchback bulb, 4157 switchback bulb, 4157a switchback bulb, 4157r switchback bulb, 4114 switchback bulb, 4144 switchback bulb, t25 switchback bulb, 3157 amber and white, 3157 dual color, p27/7w led bulb, p27/5w led bulb, 3047 turn signal, 3047r turn signal, 3057 turn signal, 3057a turn signal, 3057r turn signal, 3057na turn signal, 3157 turn signal, 3157a turn signal, 3157r turn signal, 3157na turn signal, 3357 turn signal, 3457 turn signal, 3457a turn signal, 4057 turn signal, 4057r turn signal, 4157 turn signal, 4157a turn signal, 4157r turn signal, 4114 turn signal, 4144 turn signal, t25 turn signal, 2023 3157 switchback led bulb, upgraded 3157 led bulb, upgraded 3157 switchback led, auxbeam 3157 led bulb, auxbeam 3157 switchback led, canbus error free, 3157 led with resistor, anti hyper flash, no hyper flash, 3157 bulb with load resistor, 3157 dual color, 3157 led dual function, led turn signal bulb, switchback led turn signals, 3157 led bulb with built in resistor, automotive turn signal bulbs, 3157 led, front turn signal bulb, switch back led turn signal, led resistor turn signal, led turn signal bulb with built in resistor, load resistors led turn signal, 3157 switchback led with built in resistor, drl parking light, daytime running light (2pcs/set) T25/3157 White and Amber LED Bulbs Specification: Socket: 3157/3057/3457/4157/T25 Led Type: 3030 SMD Chips LED Quantity: 36Pcs per bulb Voltage: DC12-24V Beam Angle: 360 degree Lifespan: Up to 60,000 Hours. Usage: Turn Signal Light, Daytime Running Light, Parking Light Driving Mode: Cool White (12 pieces of cool white 3030 SMD chips) Turn Light Mode: Amber (24 pieces of amber 3030 SMD chips) Auxbeam 3157 switchback led bulbsFeatures: Suitable For US standard sockets and CK sockets,High brightness LED, long lifespan, superior illumination & stability. Plug and play, No need to cut and wires. Faster on/off response and vibration resistant. Light Color: Cool white for parking lights or daytime running lights (DRL); Amber yellow for turn signal lights. Built-in stable current IC driver for better fitment and longer lifespan Review: 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. Review: 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 ## Features - 600% EXTREMELY BRIGHT Sequencing 36Pcs 2023 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 2023 stable current IC driver avoids digital or VHF radio signal interference. The 2023 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. - International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BZ45WLRZ | | Best Sellers Rank | 318,143 in Automotive ( See Top 100 in Automotive ) 371 in Automotive Turn Signal Bulbs | | Brand | Auxbeam | | Customer Reviews | 4.0 4.0 out of 5 stars (397) | | Date First Available | 11 Aug. 2023 | | Exterior | Polished | | Item Weight | 68 g | | 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 | | Package Dimensions | 15.19 x 14.81 x 3.71 cm; 68 g | | Position | Front | | Special Features | Fits 99% Vehicles, Built-in Load Resistor, No Extra Resistor Needed, Anti Hyper Flash, 2023 Canbus Error Free, 2023 Latest IC Driver, Non-Polarity, Plug and Play, Easy Installation, Small Size Similar to OEM Bulbs, Fits CK Sockets / SRCK Sockets and US Standard Sockets, No Radio Interference, No Dark Spots, 360° Full Lighting, 28W/Bulb, High Power, 500% Brighter, High Visibility, Electroplating Pr… | | Voltage | 12 Volts (DC) | ## Product Details - **Brand:** Auxbeam - **Brightness:** 600 lumen - **Colour temperature:** 6500 Kelvin - **Light source type:** LED - **Wattage:** 28 watts ## Images ![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 - Image 1](https://m.media-amazon.com/images/I/71-E08XgcNL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by M***T on 8 June 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. ### ⭐⭐⭐⭐⭐ Review *by A***I on 19 August 2023* 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 ### ⭐⭐⭐⭐⭐ Review *by R***Q on 30 October 2024* Looks great ## 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.it/products/566900773-auxbeam-b21-series-3157-switchback-led-bulbs-built-in-resistor](https://www.desertcart.it/products/566900773-auxbeam-b21-series-3157-switchback-led-bulbs-built-in-resistor) --- *Product available on Desertcart Italy* *Store origin: IT* *Last updated: 2026-05-15*