This OEM Stihl air filter (Part No. 4137 124 2801) is designed for use in a wide range of Stihl handheld equipment including FS75, FS80, FS85, HL75, HT70, HT75, KM85, FC75, and FR85 models. It’s a rectangular felt-style filter that fits neatly into the original airbox without modification.
The filter traps fine particles and airborne debris, helping to maintain clean airflow to the engine. This supports reliable starting, consistent throttle response, and reduced engine wear. It’s especially useful in dusty environments where clean intake air is critical for performance and longevity.
Ideal for routine servicing of brushcutters, hedge trimmers, pole pruners, and Kombi engines, this part is a direct OEM replacement and installs easily. Suitable for both professional landscapers and home users.
Sold individually.
Technical Specifications:
OEM Part Number: 4137 124 2801
Filter Type: Felt
Shape: Rectangular
Fits Models: FS75, FS80, FS85, HL75, HT70, HT75, KM85, FC75, FR85