John Deere tractor loader mount frames fit the 3X20 and 3R series of tractors without a JD factory installed cab. fits on loader models 300, 300X, 300CX, H160, H165, 300R, and 320R. Part numbers AW32451 (left frame) and AW32450 (right frame) includes mounting bolts. New these parts are over $900 at John Deere.