The Genuine OEM Briggs & Stratton 491588S 491588 Air Filter Cartridge 5043 is a high-quality, brand-new air filter designed specifically for lawn mowers. This filter cartridge, made by the trusted brand Briggs & Stratton, ensures a clean and efficient filtration system for your yard and garden machinery. With a single filter included in the pack, this product is a reliable choice for maintaining the performance of your lawn mower.