The BOSCH 1987301050 is a high-quality glow plug engineered for optimal performance. Designed as a P21W bulb with a 12V rating, it ensures efficient operation. This glow plug is a crucial component for diesel engines, facilitating the ignition process by preheating the combustion chamber. Its robust construction from BOSCH guarantees durability and longevity. Ensure your vehicle starts smoothly in all conditions with this dependable glow plug. It meets stringent quality standards expected from BOSCH automotive parts.