Category: Small Engines and Tools Small engines are essential for various tasks, including lawn care, gardening, construction, and more. These machines require regular maintenance to ensure they run smoothly and efficiently. One of the most critical components of a small engine is the spark plug. It ignites the air-fuel mixture in the combustion chamber, which powers the engine. In this review, we will discuss various types of spark plugs available for small engines and their features. Hilom Pack of 2 491055 Spark Plug for Champion RC12YC John Deere M78543 Kohler 25 132 12-S 12 132 02-S Briggs & Stratton 491055S 491055T 805015 72347 Husqvarna 531308128 The Hilom Pack of 2 491055 Spark Plug for Champion RC12YC John Deere M78543 Kohler 25 132 12-S 12 132 02-S Briggs & Stratton 491055S 491055T 805015 72347 Husqvarna 531308128 is a set of four spark plugs that are designed to work with various small engines. These plugs come in different sizes and are suitable for use on lawn mowers, chainsaws, trimmers, and other similar machines. The plugs have a heat range of 4-6, which makes them ideal for cold start applications. They also feature a platinum tip that helps to extend the life of the spark plug and improve performance. The plugs are made from high-quality materials that ensure durability and reliability.