The Carquest 3157 Bulb is a dual-filament automotive bulb widely used for tail lights, brake lights, and turn signals. Designed to provide both low-intensity running or parking light and high-intensity brake or turn signal functions in one bulb, it ensures optimal visibility and safety on the road. Constructed with durable tungsten filaments, the 3157 bulb resists shock, vibration, and frequent on-off cycles, delivering reliable and long-lasting performance. Compatible with standard 12V automotive electrical systems, the Carquest 3157 Bulb is a dependable choice for maintaining clear and consistent vehicle signaling.