US Warehouse - FREE FAST Shipping in USA Product Description: 491055 Spark Plug is Brand New 2 Pack of Genuine Briggs Stratton Spark Plugs... Sold Loose as Pictured, Pulled from Bulk Pack... We are an Authorized Briggs Stratton Dealer... (2) pack of Spark Plugs Genuine Briggs Stratton Part # 491055 Champion Part # RC12YC The electrodes on a spark plug must be clean and sharp to produce the powerful spark required for ignition The more worn or dirty a spark plug, the more voltage - and the greater the tug on the rewind - required to produce an adequate spark Briggs Stratton spark plug resists fouling/corrosion providing easy starting and improved engine performance Set spark plug gap according to operator?s manual. Fits the Following Lawn Tractor Models: Briggs Stratton 27hp Twin Engine MTD Riding Mower with a Briggs Stratton Engine Cub Cadet GT1554VT Husqvarna 2348LS with 28hp Briggs Stratton Engine John Deere LA165 Briggs Stratton Engine Husqvarna YTH22V46 Riding Mower Briggs Stratton Vangaurd Twin 16 HP in my Simplicity lawn tractor Craftsman GT5000 and more Thank You for Shopping!