Champion Spark Plug RZ7C #965-Box Replaces CMR7H CMR7A CMR6H CMR6A for 2-Cycle and 4-Cycle Engines Use the Champion RZ7C Spark Plug for Mowers, Chain Saws, Trimmers and Pumps to keep your engine performing at a high level. The spark plug is designed to withstand high temperatures and fits most small-engine brands and models. For use with walk-behind lawn mowers, chain saws, trimmers and pumps Champion copper plus small engine plugs resist fouling and provide superior corrosion resistance Feature a copper core electrode that provides increased conductivity and heat control while delivering good overall wear characteristics Engineered to exceed OE designs and maximum durability Designed for easy starting Plug Type: JZ7C Seat Type: Gasket Hex Size: 5/8 in (16 mm) Thread Size: 10 mm Plug Reach: 0.5 in (12.7 mm) Taper Diameter: 0.25 in Installed Height: 2.24 Gap: 0.027-0.033in (0.69-0.84 mm) Center Electrode Material: Nickel Copper Alloy Ground Electrode Material: Nickel Copper Alloy Insulator type: Zirconia enhanced Classification: Champion Copper Plus Small Engine Resistor Plug: Resistor MPN: 965-Box UPC: 037551009190 USA domestic shipments are shipped USPS First Class Mail with Tracking International shipments are shipped USPS First Class International Mail with Tracking