NGK Spark Plug is a European company with Japanese roots specializing in the production of spark plugs for motorcycles and cars. The group is represented worldwide by numerous sales subsidiaries, production plants and technical centers. The complete range of NGK spark plugs includes a wide range of product types: from the standard spark plug to the precious metal spark plug, up to the double precious metal spark plug. NGK therefore offers the optimal solution for practically every engine. Ultra-performance spark plugs with iridium central electrode are used by many car manufacturers in original equipment. They were developed specifically for the most technologically modern engines, but constitute an alternative to the standard types even in older models to optimize the combustion process.