This genuine Stihl hose is a flexible fuel and oil line designed for mid-to-large chainsaws, including the MS 311 and MS 362. Constructed from durable elastomeric rubber that resists fuel and oil, it delivers a secure, leak-free flow to keep both the engine and chain lubrication systems functioning properly. Replacing worn, cracked, or brittle hoses helps prevent air leaks, hard starting, poor fuel delivery, or reduced bar oiling performance, ensuring your chainsaw runs smoothly and reliably.