This BorgWarner (BERU) glow plug, part code GN991, is engineered to provide efficient and dependable engine starting, especially in low temperatures. Its robust construction ensures longevity and consistent performance throughout its service life. Designed to meet stringent quality standards, this glow plug plays a crucial role in the combustion process by pre-heating the air in the cylinder. This facilitates easier ignition of the fuel-air mixture, reducing starting effort and emissions during cold starts. Trust in BorgWarner (BERU) for high-quality engine components that deliver on performance and reliability. The GN991 is a direct fit for compatible applications, ensuring a straightforward installation.