Hustler 604346 - Pin, discharge chute (chute pin / discharge chute hinge pin).
Used on Hustler Raptor series mower decks (various 36", 42", 48", 52", 54", and 60" deck sizes). Commonly shown in the parts diagrams for Deck Belt, Discharge Chute, Pulley Covers & Blades and related deck sections (including deck lift). Also listed on Raptor SDX open deck diagrams for serial number (S/N) prior to 17019008 and S/N 17019008 & higher.
element not set
This part fits your tractor

