Spark plugs are a professional consumable for the maintenance of 4-stroke gasoline engines. This box of 50 units of NGK BPR6ES is perfect for workshops, distributors or technical services that perform frequent overhauls of machinery. With 14 mm threads, a thread length of 19 mm and an electrode gap of 0.9 mm, they are compatible with lawnmower or power tiller engines such as the Honda GX. Thanks to a nickel alloy electrode, an internal resistor and a copper core, reliable starting and efficient combustion are guaranteed even under demanding conditions.