--- product_id: 566900773 title: "Auxbeam B21 Series 3157 Switchback LED Bulbs Built in Resistor Error Free" brand: "auxbeam" price: "B/.187" currency: PAB in_stock: true category: "Auxbeam" url: https://www.desertcart.com.pa/products/566900773-auxbeam-b21-series-3157-switchback-led-bulbs-built-in-resistor store_origin: PA region: Panama --- # 600% brighter output Dual color switchback tech 4-layer advanced cooling Auxbeam B21 Series 3157 Switchback LED Bulbs Built in Resistor Error Free **Brand:** auxbeam **Price:** B/.187 **Availability:** ✅ In Stock ## Summary > 🚗 Light Up Your Drive, Stand Out Everywhere! ## Quick Answers - **What is this?** Auxbeam B21 Series 3157 Switchback LED Bulbs Built in Resistor Error Free by auxbeam - **How much does it cost?** B/.187 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/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 - • **Stay Cool, Drive Longer:** Innovative 4-layer cooling system with silent fan and aviation aluminum ensures 60,000 hours lifespan. - • **Seamless Dual-Color Switching:** Instant-on white for DRL/parking and amber for turn signals with clear amber-off flashing for safety. - • **Illuminate with 600% More Power:** Experience ultra-bright 6500K white & 3500K amber light for unmatched visibility and style. - • **Plug & Play CANBUS Compatibility:** Built-in resistor guarantees error-free, no hyper-flash operation on most vehicles. - • **Universal Fit for Modern Drivers:** Fits multiple socket types (3157/3057/3457/4157/T25) with stable current IC driver for interference-free use. ## Overview Auxbeam B21 Series 3157 Switchback LED Bulbs deliver 600% brighter illumination with dual-color white and amber LEDs, featuring a cutting-edge 4-layer cooling system for up to 60,000 hours of reliable use. Designed for universal fit and CANBUS error-free operation, these bulbs provide instant-on response and enhanced safety with a unique amber-off flashing pattern, perfect for professional drivers seeking superior visibility and style. ## Description Upgrade your front turn signals and daytime running lights with the Auxbeam B21 Series 3157 Switchback LED Bulbs, the smart, all-in-one lighting solution engineered for performance, safety, and convenience. Dual-Color Switchback Technology These bulbs deliver two distinct functions in a single unit: crisp 6500K White illumination for parking lights and daytime running lights (DRL), seamlessly switching to a bold 3500K Amber flash for turn signal operation — giving your vehicle a sleek, modern look while maximizing road safety. CANBUS Ready — Error Free & Anti Hyper Flash Built with an integrated resistor, the B21 Series is compatible with 99% of vehicle CANBUS systems, eliminating common LED issues like "bulb out" dashboard warnings and hyperflashing — no extra decoders or wiring modifications required, just plug in and drive. 600% Brighter Than Halogen Each bulb features 36 high-grade 3030 LED chips, making your signals dramatically more visible day or night. Exceptional visibility even in fog, rain, and low-light conditions ensures other drivers can always see your signals clearly. Advanced Heat Dissipation The Intelligent Temperature Control System, combined with an aluminum textured casing and internal heat-dissipation fins, protects against overheating and excessive current for long-lasting, consistent performance. Built-in MINI fuses add an extra layer of protection for both the bulb and your vehicle's electrical system. 5-Minute Plug-and-Play Installation Designed as a direct OEM replacement, these bulbs fit standard sockets with zero modifications. Compatible sizes include: 3157, 3157A, 3057, 3057A, 3457, 3457A, 4057, 4157, 4157NA, 3056, 3456, 4156, 3047, 3155, 3357, 3454, 3757, 3357NA. Specifications Bulb Size: 3157 / B21 Series Colors: Amber (turn signal) / White (DRL/parking) Color Temperature: 3500K (Amber), 6500K (White) Wattage: 56W per pair Voltage: 12V Pack: 2 bulbs Socket Type: Standard only (not for CK sockets) ## 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 | | Auto Part Position | Front | | Automotive Fit Type | Universal Fit | | Best Sellers Rank | 567,733 in Automotive ( See Top 100 in Automotive ) 579 in Automotive Turn Signal Bulbs | | Brand Name | Auxbeam | | Brightness | 600 lumen | | Color Temperature | 6500 Kelvin | | Colour | Amber White | | Customer Reviews | 4.0 4.0 out of 5 stars (442) | | Fit Type | Universal Fit | | Included Components | 2x 3157 LED Bulbs | | Item Highlight | White and Amber, Anti Hyper Flash, 600% Bright, T25 3057 3457 4157 Bulbs with Fan, Turn Signal Light Light DRL Parking Light | | Light Output Maximum | 600 Lumens | | Light Source Type | LED | | Manufacturer | Auxbeam | | Manufacturer Part Number | B21-3457-AW | | Model Number | AUXBEAM-B21-3157 | | Number of Items | 2 | | OEM Equivalent 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 Quantity | 1 | | Specific Uses For Product | Daytime Running Light, Indicator Light, Parking Light | | Unit Count | 2.0 count | | Voltage | 12 Volts (DC) | | Wattage | 28 watts | ## Product Details - **Brand:** Auxbeam - **Brightness:** 600 lumen - **Colour temperature:** 6500 Kelvin - **Light source type:** LED - **Specific uses for product:** Daytime Running Light, Indicator Light, Parking Light ## Images ![Auxbeam B21 Series 3157 Switchback LED Bulbs Built in Resistor Error Free - Image 1](https://m.media-amazon.com/images/I/71-E08XgcNL.jpg) ## Available Options This product comes in different **Size** options. ## 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/566900773-auxbeam-b21-series-3157-switchback-led-bulbs-built-in-resistor](https://www.desertcart.com.pa/products/566900773-auxbeam-b21-series-3157-switchback-led-bulbs-built-in-resistor) --- *Product available on Desertcart Panama* *Store origin: PA* *Last updated: 2026-10-08*