The Tonixy Foam Air Filter Box Cover is the perfect solution for Gx22, Gx31 139F, and 31CC engine brushcutter lawn mower accessories, ensuring easy installation while protecting against dust and debris. This innovative design, designed for outdoor lawn care equipment, is both aesthetically pleasing and functional. Made of durable foam material, it provides robust protection and easy installation. Simply remove the existing filter box cover, apply the Tonixy foam adhesive strips, and place the new cover over the old one. It's the perfect accessory to enhance your gardening experience and keep your engine clean and protected.