The 3157 bulb is a dual filament bulb, which means it has two filaments that provide different levels of brightness for different functions. The brighter filament is used for the brake light and turn signal, while the dimmer filament is used for the tail light and parking light. This bulb has a wattage of 27/8 watts and produces a total of 405 lumens.
3157 Light Bulb
BULB CROSS REFERENCE
The 3157 light bulb family is interchangeable with the following bulbs
The dimensions of the 3157 bulb are 2.17 inches in length and 0.98 inches in diameter. It has a wedge base with two parallel pins that fit into the socket. This bulb is interchangeable with other bulbs that have the same base and specifications, such as the 3156 and 3057 bulbs.
The 3157 bulb is commonly installed in the rear of the vehicle, in the tail light or brake light housing. It is also used in the front of the vehicle as a turn signal or parking light. This bulb is compatible with a wide range of vehicles, including cars, trucks, SUVs, and motorcycles.
Overall, the 3157 automotive light bulb is a reliable and versatile lighting option that provides bright and efficient illumination for a variety of automotive applications. Its dual filament design and interchangeable compatibility make it a popular choice for many vehicle owners and mechanics.