High-quality aftermarket SA17578 internal air filter designed for various Kubota compact tractors and zero-turn mowers. This filter ensures optimal engine protection by effectively removing contaminants from the air intake. It is a direct replacement for Kubota OEM part numbers K2581-82310 and K2581-82311, fitting models such as the B2320, B2620, B2920, BX1850, BX2350, and ZD1211 series. With precise dimensions, including a height of 175mm, an outer diameter of 76mm, and an inner diameter of 40mm, it provides reliable performance and extends engine life.