Product Specifications

The P21W is a classic focused vehicle lighting bulb with a rated voltage of 12V and a rated power of 21W, compatible with the standardized BA15S single-contact bayonet base. In the model designation, "P" stands for the parabolic reflective structure; the light can achieve directional focusing after being reflected by the inner wall, featuring a long irradiation distance and high brightness concentration. Compared with wide-angle bulbs, it is more suitable for scenarios requiring precise lighting.

The BA15S base has a diameter of 15mm. Its single-contact design ensures stable current conduction, with firm and convenient plug-and-play installation that fits the lamp slots of most passenger and commercial vehicles. This bulb adopts proven tungsten filament lighting technology, emitting warm yellow light with excellent penetration, which performs well in low-visibility weather such as rain and fog. It is mainly used in key warning and lighting positions such as car reversing lights, brake lights and turn signals, serving as a common basic accessory to ensure vehicle driving safety.