Briggs & Stratton L-Head Spark Plug. It ensures peak performance for your outdoor power equipment. Designed for most B&S L-Head Engines, including 475, 500, 600, 625, 650 & 675 Series. It also fits previous Classic, Sprint, Quattro & Quantum Series B&S Engines with a range of 3 HP - 23 HP. Compatible with brands like Craftsman, Husqvarna, John Deere, MT, Poulan, Poulan Pro, Snapper, Toro, and many others equipped with the listed engines. It replaces Champion #s RJ19LM, RJ17LM, RCJ8, J19LM, J17LM & CJ8. It is the DIY version of Briggs Service Part #796112S.