.BOSCH	More Efficient - Optimise Acceleration
.Super 4	More Performance - More Protection
The Bosch Super 4 features four thin ground electrodes and a silver-plated centre electrode. This combination utilises the latest surface-air-gap technology which offers 8 possible spark gaps, to provide optimised engine power, smoother running, superior engine flexibility, improved acceleration and excellent starting performance. The spark selects the best path to ensure correct ignition from one of the four ground electrodes to the centre electrode - either via the air-gap or via the surface air-gap. Optimum ignition reliability protects the engine and the catalytic converter. In addition, the self-cleaning effect of the surface air-gap spark prevents carbon-fouling of the spark plug. The Bosch Super 4 offers much more than conventional plugs. The spark plug efficiency is raised by up to 60%, increases engine performance to an optimum degree - in every driving situation, throughout the plug's service life. The ignition reliability is more than doubled, thus keeping the risk of misfiring to a minimum. Reliability is guaranteed by the factory preset gap. The Bosch Super 4 meets or exceeds the service life requirements specified by major manufacturers for specific vehicles listed in the Bosch spark plug applications catalogue.
Surface Air Gap Technology The spark jumps from the centre electrode via the conventional air gap to a ground electrode and ignites the mixture. The spark travels from the centre electrode over the carbon particles on the insulator nose andjumps to a ground electrode.