Enhance the reliability and performance of your equipment with our premium replacement filter, engineered as a direct OEM spec alternative for part numbers 71943, HG71943, 5101987X2, and 21548300. Built to meet strict OEM standards, this high quality filter delivers consistent protection, optimal efficiency, and long lasting durability to keep your Hydro Gear, Scag, Ferris, and Gravely equipment performing at peak levels. To ensure a perfect fit, simply use the Filter Finder link above to confirm that your machine is listed as compatible and that the referenced part numbers match as valid cross references. Whether you're maintaining commercial mowers or demanding hydro systems, this filter provides dependable operation and helps extend the life of your equipment in tough working conditions.