Voltage: 4.4 V / Thread (ISO): M 8 x 1 / Torque: 10 Nm / Length: 148 mm Duraterm HighSpeed 4, 4 or 5 Volt technology developed by Bosch: Reaches its preheating temperature of approximately 950 °C in about 3 seconds Not just a starting aid: The Duraterm HighSpeed is adjustable, which means it can always supply the engine with the necessary temperature Post glow time of up to 6 minutes: Additional functions such as, intermediate and regeneration annealing, ensure quiet engine idling and comfort in all load ranges Bosch glow tube: Provides a longer service life and protection against corrosion Low voltage design (4.4 or 5.0 volts): Offers protection of the battery and relief of the alternator during cold starts Please use the vehicle identification to confirm compatibility with your vehicle - all restrictions must be observed