Aftermarket Brand: ITACOFor Honda part number:17210-ZE0-505, 17210-ZE0-821Fits 4 HP Horizontal Engines, Size L=102mm W=73mm H=54mmThis high quality Filter is specifically designed to fit GX110 , GX120 & GX120K models.Lawn Mower, Tractor, Water Pump, Air compressor, Trimmer, Generator, Engine..