Stihl 4242 120 1800 Filter

The genuine Stihl air filter, OEM No. 4242 120 1800, is specifically designed for petrol hedgetrimmers, effectively preventing dust and debris from entering the engine and carburettor. Made with durable filter media and a sturdy plastic frame, this air filter ensures clean airflow, which is essential for reliable starting, smooth operation, and reduced engine wear. Compatible with popular models such as the HS46C and HS56C, the Stihl air filter installs easily in the air box without any modifications. By using this correct air filter, you can maintain proper engine breathing, support consistent performance, and potentially improve fuel efficiency over time.