Compatible with the air filter, filter element and air filter unit of the STIHL petrol chainsaws MS311, MS362 and MS391.--BIEMMEDUE

Multi-model compatibility: Specifically designed for STIHL MS311, MS362, and MS391 series petrol chainsaws, and also compatible with the MS261, MS271, and MS291 models, this product offers broad compatibility. Original part number: This product is a perfect replacement for STIHL part numbers 1141 140 4400 / 1141 120 1600, making it an ideal replacement part. High-performance filtration: Made of high-quality filter paper, the pleated structure increases the filter surface area and effectively blocks sawdust, dust, and other contaminants. This protects the cylinder and piston rings and extends the engine's lifespan. Optimized airflow: The uniform porosity of the filter paper ensures high-performance filtration while maintaining optimal airflow for an ideal air-fuel mixture, complete combustion, and maximum performance. Easy maintenance: Simple installation and removal; quick, tool-free replacement for simplified daily cleaning and maintenance. Economical: Regularly replacing the air filter is the simplest and most effective method of engine maintenance. This product offers the same filtration performance as the original part, but at a lower price. Specifications: Part type: Air filter unit / Air filter / Filter element / Filter. Compatible models: STIHL models: MS261, MS261C, MS271, MS271C, MS291, MS291C, MS311, MS362, MS362C, MS391. Original part numbers: 1141 140 4400, 1141 120 1600, 1141 120 1604