







🚗 Light Up Your Drive with Brilliance & Precision!
The Auxbeam B21 Series 3157 Switchback LED Bulbs deliver 600% brighter illumination with dual-color switchback functionality, featuring a built-in CANBUS resistor for error-free installation on 99% of vehicles. Equipped with a cutting-edge 4-layer cooling system and 360° full beam coverage, these bulbs ensure long-lasting, high-performance lighting with easy plug-and-play setup—perfect for millennial professionals who demand style, safety, and reliability on the road.
| Manufacturer | Auxbeam |
| Brand | Auxbeam |
| Model | 3157 Switchback LED Bulbs |
| Package Dimensions | 15.19 x 14.81 x 3.71 cm; 68 g |
| Item model number | AUXBEAM-B21-3157 |
| Exterior | Polished |
| Manufacturer Part Number | B21-3457-AW |
| 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 |
| Position | Front |
| Bulb Type | LED |
| 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 Process Housing, 2023 Strong Cooling, 60,000hrs Long Service Life, IP68 Waterproof, For super few sensitive models such as Chevrolet silverado and 2014-2018 Dodge RAM 1500, extra resistors are needed or you can get from us for free, NOT fit TOYOTA TUNDRA 2014-2021 and TOYOTA TACOMA 2016-2021. |
| Voltage | 12 Volts (DC) |
| Wattage | 28 watts |
| Item Weight | 68 g |
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