Spark plug (CZ) - BRISK N14C Single-electrode wide-range spark plug with a middle electrode made of a special alloy filled with a copper core with high thermal conductivity. Exchange interval: max. 30.000 km Thread: M 14x1,25 Recommended tightening torque: 20-30 Nm Thread length: 12,7 mm Wrench size: 21 mm NOTICE: The strictly specified tightening torque for mounting the spark plug to the engine