This air filter cover is a genuine Stihl replacement designed for selected petrol brushcutters and pole pruners, including FS 91 and FS 89 models. Constructed from durable molded plastic with excellent impact and weather resistance, it fully encloses the air filter element to protect against dust, grass, and debris. By keeping the air intake clean, it supports reliable starting, smooth idling, and consistent cutting performance. This cover provides a precise fit, restoring proper sealing when the original cover is cracked, worn, or missing.
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