One New Aftermarket Replacement Spindle Assembly for Hustler Zero-Turn MowersThis aftermarket replacement spindle assembly controls the safe rotation of the mower blade on Hustler zero-turn mower decks. It fits Hustler Raptor SD, Raptor SDX, Raptor Flip-Up, and Sport series mowers with 36" through 60" decks, serving as a direct bolt-on replacement for the original deck spindle assembly.Specifications Height: 5-3/8" Outer Diameter: 5-1/4" Thread (blade end): 5/8"-11 Compatible ModelsHustler Raptor SD: 36", 42", 48", 54", 60" DecksHustler Raptor SDX: 36", 42", 48", 54", 60" DecksHustler Raptor Flip-Up: 48", 54" DecksHustler Sport: 36", 42", 48", 54", 60" DecksHustler FasTrak SD: 36", 42" DecksNote: Please double-check your model and serial number against your parts manual to verify fitment before ordering. This spindle does NOT fit Hustler FasTrak or FasTrak SDX 48"/54"/60" models -- those use a different spindle (Hustler 605380/125981).Replaces Part Number(s):601804, 601804-AAftermarket Interchange Numbers607418, 14934, 14934-A, 285-322, FRS20-0049New aftermarket replacement part - not remanufactured, not used.