CHAMPION SPARK PLUG QL78YC #938 Replaces: BPR8HN10 018-3042-2 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: QL78YC Seat Type: Gasket Hex Size: 13/16 in (20.64 mm) Thread Size: 14 mm Thread Reach: 0.5 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 Classification: Champion Copper Plus Small Engine Insulator Material: Zirconia Enhanced Heat range: 78 Resistor Plug: Non-resistor UPC: 037551005291 or 037551002436 Purchase is for one spark plug. USA domestic shipments are shipped USPS First Class Mail with Tracking International shipments are shipped USPS First Class International Mail with Tracking