Product Specifications

The PY21W is a dedicated vehicle warning bulb with a rated voltage of 12V and a rated power of 21W. It emits amber light and is compatible with the standardized BAU15S single-contact offset-pin 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 excellent warning focusing effect. "Y" corresponds to amber, emitting striking yellow light with outstanding penetration in severe weather such as rain and fog. The 21W power rating ensures stable high-light output to meet the dynamic warning needs of vehicles.

The BAU15S base has a diameter of 15mm. Its unique offset-pin design can effectively prevent reverse installation of the bulb, ensuring accurate connection between the positive and negative poles of the circuit. With firm and convenient plug-and-play installation, it is compatible with the turn signal assemblies of most passenger vehicles. This bulb adopts proven tungsten filament lighting technology. The amber light has high warning visibility and will not cause glare interference to drivers of other vehicles. It is a common core accessory for car turn signals and hazard warning lights, playing an important role in improving driving safety.