The automotive bulb number 51 is a single beam lamp that utilizes halogen technology. It has one filament and a P14.5s base. Its nominal power is 12 volts and 5 watts. This bulb can be used as a replacement part for parking lights, instrument panel lights, and other similar applications. It is usually used in reflector headlights and has a life span of approximately 1-2 years. The name 51 indicates that the bulb has a wattage of 5 and a wedge-type base. Its specs include 35 lumens and a color temperature of 2700K. The bulb is interchangeable with other bulb types such as 53, 57, and 1895.