3157 Automotive Bulb
Description
The 3157 bulb is a dual-filament automotive light bulb used for exterior vehicle lighting that requires two levels of brightness, such as combination tail and brake lights.
- Voltage/Wattage: Operates at roughly 12.8 volts, pulling about 27 watts on its primary high-intensity filament and 8 watts on its secondary low-intensity filament.
- Base Type: T5 wedge base (W2.5x16q) designed for dual-circuit sockets.
- Lifespan: Standard incandescent versions last around 1,200 hours, while long-life (LL) variants offer extended durability against road shock and vibration.
