Optimal Filtration Efficiency: Crafted from high-quality plastic and filter paper, this air filter ensures maximum filtration to enhance your lawn mower's performance. It effectively removes dust and debris, ensuring a clean air supply to the engine. Enhanced Engine Protection: By maintaining clean air intake, this lawn mower air filter extends the engine's life and improves fuel efficiency. Regular replacement of the filter can prevent engine wear caused by dust and debris. Durable Construction: Made from robust plastic and superior filter paper, the air filter withstands the rigors of lawn mowing. It is designed to last longer and maintain its shape and function even in tough conditions. Environmentally Friendly: This air filter contains no high-concern chemicals, making it a safer choice for you and the environment. Feature: Premium Air Filter: Soft gasket, better sealing.Larger filter area, 4% higher air intake, less rubber burrs, breathe better and higher gas mileage. Especially against heavy dust and grass without anxious.Exact size, fit like a glove.Individually sealed, easy store. comfortable throughout the season. Suitable for Briggs and Stratton 491588 399959 491588s hand mower. name:Air Filter Material: plastic colour: As shown Package Contents: 20 x air filter