Product Specifications

The WY21W is a special-purpose vehicle warning lighting bulb with a rated voltage of 12V and a rated power of 21W, compatible with the standardized W3x16d wedge base. In the model name, "W" stands for the wide-angle lighting type, which has a broad light scattering range and outstanding warning effect; "Y" corresponds to the English word "Amber", meaning the bulb is amber-colored and can emit striking yellow light directly; the 21W power ensures sufficient brightness to meet the dynamic warning needs of vehicles.

The W3x16d base is compact in size, featuring firm and convenient plug-and-play installation, and is compatible with the lamp assemblies of most passenger and commercial vehicles. Adopting tungsten filament lighting technology, the amber yellow light of this bulb has excellent penetration in severe weather such as rain, snow and fog, and is not easily disturbed. It is mainly used in core warning positions such as car turn signals and hazard warning lights, serving as a key accessory to ensure information transmission during vehicle driving and improve driving safety.