Hustler 604792 Flat Idler Pulley

The Hustler 604792 is a genuine OEM flat idler pulley designed for the mower deck drive system on Hustler zero-turn radius mowers. It functions to route and tension the deck belt, ensuring consistent power transfer to the cutting blades. The pulley features a steel shell construction with a sealed ball bearing for maintenance-free operation. Critical dimensions include an outer diameter of 5.75 inches (146 mm), an inner bore diameter of 0.5 inches (12.7 mm), and an overall height of 1.375 inches (35 mm). The flanged design retains the belt within the groove under high-load cutting conditions. This component replaces all legacy Hustler part numbers associated with the 5-inch flat idler configuration across Raptor, Super Z, and FasTrak series decks.