Preheating Cartridge - 12VParts Number: 50410799A Preheating Cartridge 12V from Webasto is an integral part of the diesel heater system, designed to assist with the ignition process, especially in cold conditions. This 12V cartridge heats the combustion chamber, helping to achieve reliable and efficient ignition of the fuel. By preheating the fuel and air mixture, it ensures smooth startup and optimal heater performance even in freezing temperatures. Ideal for use in vehicles,