Briggs & Stratton 491055S Spark Plug

Spark Plug Replace Champion RC12YC

Fits a broad range of Briggs & Stratton engines and equipment, including numerous 085432 / 085462 / 093J02 / 097772 / 097777 engine variants, as well as engine families such as 124332, 124432, 12A100, 12A300, 12A400, 12B400, 12C100, 12C300, 12C400, 12D100, 12D200, 12D300, 12D400, 12E100, 15B100, 15C100, 15D100, 15Z100, and 15Z300 series. Applications include a wide selection of portable generators (ranging from ~3,000W to 8,000W units), pressure washers (approximately 2,200–12,000 PSI), and related outdoor power equipment. Compatibility also extends to select Husqvarna riding mowers (e.g., YTH 2242 T models), Toro lawn mowers and lawn tractors across multiple production years, and various residential and commercial lawn tractors, making this fitment suitable for a very wide range of generator, mower, tractor, and pressure washer applications.