Keep your engine running at top notch capacity with this Briggs and Stratton replacement spark plug. For years Briggs and Stratton has supplied superior engine products to the everyday consumer for many years. Designed to deliver premium power to your small engine smooth startups and maximum spark plug life. To ensure a proper fit please reference your engine’s owner manual. This Briggs & Stratton spark plug is a direct replacement for manufacturer part number BSP5095K RJ19LM and RCJ8.