BOUGIE CHAMPION LANCIA :
Before installation, check the recommended thermal value and the gap according to the manufacturer's instructions, it is common for older vehicles to set to 7/10ths of a mm, it is also recommended to lightly coat the threads with a layer of copper-based high-temperature grease, this will make later disassembly much easier and ensure good heat exchange between the spark plug and the cylinder head. Insert the spark plug by hand and screw in the first few turns to make sure the threads are in the right position, then continue screwing and finish with a moderate tightening. The words "Sport", "Group N" and "Group A" indicate the recommended The words "Sport", "Group N" and "Group A" indicate the recommended level of preparation and/or use for a particular part price. Other values may be suitable for your engine.