121-959

This high-performance 5.25-inch OD sheave is a critical component for belt-driven blower systems found in various HVAC and air handling units. Featuring a precision-engineered 3/4-inch bore, this pulley facilitates smooth power transmission from the motor to the blower shaft, ensuring consistent airflow and system efficiency. Ideal for replacing worn, grooved, or damaged sheaves, this part helps eliminate excessive vibration and prevents premature belt wear. Whether you are maintaining a residential furnace or a commercial ventilation system, this durable blower pulley provides a reliable fit and long-lasting operation for your air circulation equipment.
Type: Blower Pulley / Sheave
Size: 5.25-inch Outside Diameter
Dimensions: 5.25 in × 5.25 in
Application: Commonly used in belt-driven HVAC systems, furnace blower assemblies, and air handling units for both residential and commercial heating and cooling applications.
Specifications: 5.25" Outside Diameter (OD), 3/4" (0.75") Bore Size, compatible with standard blower belts.