NGK spark plug resistor covers are the best protection against radio frequency interference when used with resistor spark plugs Protect engines from cutting out in wet conditions For use with 7mm diameter plug wires Sold each This item fits the following applications: 1987-2000 Suzuki LT80 QuadSport 1984-1987 Suzuki LT185 1986 Yamaha YF60S 4-Zinger 1984-1985 Yamaha YT60 Zinger 1985 Suzuki ALT185 1977-1984 Honda FL250 Odyssey 1982-1983 Yamaha YT175 Tri-Moto