Champion Spark Plug DJ6J #851 #851C, SELECT: Card, Box or Shop Pack Spark Plug for 2-Cycle and 4-Cycle Engines MADE IN USA Copper Plus Small Engine Spark Plug Champion Small Engine OE Replacement spark plugs feature a copper core center electrode allows for accurate control of heat range, optimizing the performance and longevity of the spark plug. They are the perfect OE replacement plug for lawn and garden applications and similar engines. Dependable performance and durability. Resists fouling. Superior corrosion resistance. Electrode Core Material: Nickel Copper Alloy Electrode Tip Material: Nickel Copper Alloy Ground Strap Quantity: 1 Insulator Type: Zirconia Enhanced Manufacturer Heat Range: 6 Resistor: No Shorty Spark Plug: Yes Spark Plug Reach: 0.307 in Spark Plug Seat Type: Tapered Spark Plug Thread Size: 14 mm Tip Configuration: J Gap Type: Champion Copper Plus Small Engine Wrench Diameter: 0.625 in (5/8") Maintain your chain saw or trimmer's engine performance with the Champion Spark Plug for Chain Saws and Trimmers. The spark plug is designed to withstand high operating temperatures and has a 14mm thread.For use with chain saws and trimmers For use with chain saws and trimmers 14 mm thread, 8-1/4 mm reach and 5/8 in. hex Withstands high temperatures Non-resistor UPC Box Pack: 037551001033 UPC Card Pack: 03755116445 or 037551011285 Shop Pack plugs are from a Bulk Shop Pack and are shipped wrapped in individual bubble wrap units. Purchase is for one one spark plug USA domestic shipments are shipped USPS Ground Advantage Mail with Tracking