Keep your Toro lawn mower running like new, season after season. This kit is designed for walk-behind lawn mowers with a Briggs & Stratton engine. This kit includes an 18 oz. bottle of 4-cycle engine oil (part # 38916), one spark plug (part # 77-7330), one air filter (part # 130-8165) and a .05 oz. packet of fuel stabilizer (part # 130-2393).