Cham RCJ6Y SPK Plug, Pack of 4 RCJ6Y Stock #852 Conventional spark plug with nickel alloy electrodes Copper core center electrode allows for increased conductivity and heat control Fits outdoor power equipment, Chainsaws: Echo, Homelite, JD, Makita, Poulan, Red Max, Poulan, Shindaiwa, Solo, Stihl, Flymo Lawnmower & Some Small Engines Badger, Craftsman, Dolmar, Dyna, E-Z Roll, Earthquake, Echo, Homelite, Kawasaki, Husqvarna, Lesco, Makita, McCulloch, MTD, Red Max, Robin, Ryobi, Shindaiwa, Solo, Stihl, Tanaka, Toro, Webster, Tecumseh