1、APPLICABLE MODEL: Glow plug is used for replacement for Webasto Air Top 3500 5000 24v heaters, OEM for 91371B, meet can be used 2、INTEGRATED COMPONENT: Silicon nitride ceramic matrix, tungsten wire as the heating source, tungsten wire buried in the silicon nitride matrix, through hot pressing sintering process to form a body, and then grinding processing, welding lead, so as to make ignition component 3、MAIN ADVANTAGES: Come with long life, light weight, energy saving, high temperature resistance, high watt density, excellent chemical resistance, no electric noise, physical manufacturing, safety and environmental protection, no radiation to human body 4、RAPID HEATING: Possess excellent thermal performance and efficiency, fast heating speed, good low temperature start performance, raise the temperature faster 5、FOR PREHEATING: Mainly used for preheating and heating of engine and cab in low temperature and cold environment in winter, completely eliminate the wear of cold start of the car 6、WORKING PRINCIPLE: The use of silicon nitride preheating plug can quickly make fuel gasification, ignition, combustion. As a result, the temperature in the car can rise rapidly shortly after the engine starts, as well as at idle stop