Stihl 4149 120 1800 Filter Type_Square including the MS 311 and

including the MS 311 and MS 362

including the MS440 and MS460 models

Introducing the genuine Stihl Prefilter

efficient transfer of power from the engine to the chain

Stihl 4149 120 1800 Filter Type_Square including the MS 311 andThis genuine Stihl air filter is designed to provide clean intake air for small two stroke engines used in select Stihl hedge trimmers and brushcutters, including the HL 94 and FS 94 series. Captures fine dust, grass, and debris while allowing proper airflow to the carburetor. Maintaining clean air intake helps support smooth operation, dependable starting, and consistent power. As a regular service item, replacing a restricted filter also helps