The automotive bulb number 55 is a single beam lamp with one filament. It is commonly used as a replacement part for parking lights and some older model headlights. This bulb utilizes the halogen technology and has a nominal power of 12 volts and 55 watts. Its base is a P14.5s and it produces around 900 lumens with a color temperature of approximately 3200 kelvins. The usual lifespan of this bulb is around 1-2 years depending on usage. The name "55" indicates its wattage and it is not interchangeable with other bulb types.