CHAMPION SPARK PLUG RJ12YC #14 Replaces: OJ11Y RJ10Y RJ11Y RJ12Y RJ87P XJ10Y XJ12Y XJ9Y BP4S20 BP5S BPR5S BPR5S15 BPR5S20 BPR6S R56705 XR5 Champion copper cored center electrode with triple coated shells, this eliminates the need for the use of anti-seize compound during installation by providing the best corrosion protection of any spark plug in the industry. The Champion Copper Plus core with Zirconia enhanced insulator spark plug features a copper core electrode that provides increased conductivity and heat control while delivering good overall wear characteristics. Copper core center electrode allows for accurate control of the plug's heat range, optimizing the plug's performance and adding to the longevity of the spark plug. Manufacturers have used them in both automotive and non-automotive applications, such as lawn and garden and other power equipment. The spark plug is designed to withstand high operating temperatures. Plug: #14 Model: RJ12YC Thread size: 14 mm Reach: 0.380" (9.7 mm) Resister: Yes Wrench size: 13/16" Spark plug seat: Gasket Purchase is for one spark plug. MPN: 14 UPC: 037551000173 USA domestic shipments are shipped USPS Ground Advantage Mail with Tracking.