Candles with directional side electrode

These are candles that have a special technique in their manufacturing process where the electroof the sail side is welded in a defined position, so that it is always in the same position in the combustion chamber. This technology aims to optimize the engine's combustion process. For these spark plugs, their tightening torque must be strictly followed..

They can be produced in platinum or iridium, depending on the automaker's specification.
For these candles there is no reinstallation specification, that is, The recommendation when we remove the spark plug is to replace the spark plug. This is due to the fact that once the spark plug sealing washer has been deformed, We cannot guarantee its correct position in the combustion chamber.