Features: Long-Lasting Durability: Made with premium materials, these spark plugs are built to last. They can withstand high temperatures and pressures within the engine, ensuring long-lasting durability and reducing the need for frequent replacements. Improved Engine Health: Compatibility: Replacement for Champion RC12YC, replacement for Briggs and Stratton 491055 491055S 692051 792015 72347GS 805015 499608 491055T 694385 5066, replacement for Kohler 25 132 12-S, 25 132 12-A, 24 132 01-S, 12 132 02-S, 12 132 02, 531308128, replacement for JD M78543, 2829 71-1 711, replacement for Gravely 21525900 21531100 21534100 21536800 21537800 21544000 lawn mower engines. Easy Installation: The 491055S spark plugs replace the small lawn mower engine spark plug with accurate size and convenient installation. Ensure the smooth work of the mower, and prolong the life of the mower engine. Cost-Effective Maintenance: This pack of four spark plugs is a cost-effective solution for your vehicle maintenance. By replacing all your spark plugs at once, you can save on labor costs and reduce the time your vehicle spends in the shop. Specifications: Item Name: Spark Plugs Main Material: Iron Product Color: White Package Information: Package Size: 20*10*3cm/7.87*3.94*1.18inch Package Weight: 200g/0.44lb Package List: 4 * Spark Plugs