The Hustler 604664 is a genuine OEM deck drive pulley designed for Hustler zero-turn mowers. This B-section pulley plays a crucial role in the mower's deck drive system, facilitating efficient power transmission from the engine to the cutting blades. It ensures proper belt tension and smooth operation, contributing to consistent cutting performance and extending the life of drive belts. Constructed from durable materials, this pulley is engineered to withstand the demanding conditions of commercial and residential mowing applications, providing reliable and long-lasting service.