STIHL Chainsaw Service Kit for MS251 is designed to keep your chainsaw operating at its with a complete set of essential maintenance components. This kit includes a new air filter, fuel filter, and spark plug, all crafted to maintain engine efficiency, reduce wear, and extend the lifespan of your equipment. Specifically made for STIHL MS251 chainsaws, this easy-to-use service kit is for occasional and mid-range users who want to ensure their saw runs smoothly and reliably. Using STIHL parts s superior fit, durability, and optimal performance, making regular maintenance quick and convenient. Model Number: 1143 007 1800