Ensure your vehicle's lighting system is functioning optimally with this high-quality W21/5W 12V bulb from BOSCH. Engineered for durability and consistent performance, this bulb is a suitable replacement for various automotive lighting needs. This bulb operates at a standard 12 volts, making it compatible with most vehicle electrical systems. Its W21/5W designation indicates its specific application and dual-filament design, often used for functions like parking lights and brake lights or turn signals. Trust in BOSCH's reputation for manufacturing reliable automotive components. This bulb is built to meet stringent quality standards, providing dependable illumination and contributing to your vehicle's safety and visibility on the road.