The Bosch Pure Light P21/5W is a high-quality automotive bulb designed to provide reliable and efficient lighting for specific vehicle applications. Operating at 12 volts with a power rating of 21/5 watts, this bulb features the P21/5W base type, making it suitable for certain automotive lighting fixtures. The P21/5W bulb is commonly used for brake lights and tail lights, where it delivers a dual-function light output - 5 watts for parking or running lights and 21 watts for brake lights. The Bosch Pure Light P21/5W is engineered for a precise fit and easy installation, ensuring compatibility with various vehicle models. As with all Bosch products, the Pure Light P21/5W is built to Bosch's high standards of quality and durability, ensuring long-lasting and dependable performance