Proce: This type of product uses silicon nitride ceramic as the base body, tungsten wire as the heating source, and the tungsten wire is buried in the silicon nitride base body. The tungsten wire is formed into a whole through the hot preing and sintering proce, and then is ground and welded to make Ignition element. Suitable for parking heater. In cold areas, heating elements and spark sensors used for ignition of vehicle auxiliary heaters use silicon nitride heating elements to quickly vaporize, ignite and burn fuel. Therefore, shortly after the engine is started, and when idling stops, the temperature inside the vehicle can also rise rapidly. Specification: Type: Glow plug Product:Glow pin(ceramic igniter) of Parking Heater Material:Hot Preed Silicon Nitride lgniter dia.:4.2mm 12V 91370B OE Number: 91370B MPN:91370B/1322428A Suitable for car voltage:12V Glow Plug Working Voltage:8V NO:08-42-4 Current:5.2-6.9A Wattage:54-65W Fitment:For Webasto Air Top 3500/5000 12V 24V 91371B OE Number: 91371B MPN:91371B/1322417A Suitable for car voltage:24V Glow Plug Working Voltage:18V NO:18-42-4 Current:3-3.6A Wattage:54-65W Fitment:For Webasto Air Top 3500/5000 24V Features: 1. Long life 2. Compact, light weight, energy saving 3. Fast heating and high temperature resistance 4. High watt density, excellent thermal efficiency 5. Excellent chemical resistance 6. No electrical noise 7. Physical manufacturing, safety and environmental protection, no radiation to human body The working voltage of the glow plug is 8V, suitable for 12V parking heater, and the working voltage of the glow plug is 18V, suitable for 24V parking heater. Package included: 1x Parking Heater Senser