Rcd kr11az406 Blower Pulley 4.25 in 0.625 in Bore

Product Description

The RCD kr11az406 is a blower pulley designed for use in forced-air HVAC systems. It works with a drive belt to transfer rotational force from the motor to the blower wheel, maintaining correct belt routing and tension within the air handler or furnace blower assembly. The pulley features a 4.25-inch outer diameter and a 0.625-inch bore, matching the shaft size common to many blower motor applications. At 1.125 pounds, it is a direct OEM-style replacement intended for installation by licensed HVAC technicians during scheduled maintenance or component failure repairs.

This blower pulley is suited for residential forced-air heating and cooling systems. Per available compatibility data, it fits the 581BTV060115AL, 581BTV060150AL, and 581BTV060115ML unit models, among others. It is typically found in equipment where belt-driven blower assemblies are used in place of direct-drive configurations. Technicians replacing worn, cracked, or out-of-round pulleys will find this part dimensionally matched to the original specification.

Key Features

• 4.25-inch outer diameter for correct belt wrap and tension
• 0.625-inch bore sized for standard blower motor shaft fitment
• OEM-style replacement engineered to original dimensional specifications
• Compact package dimensions support storage and transport: 21.7 inches long, 5.4 inches wide, 3.1 inches tall
• Lightweight at 1.125 pounds for easy single-technician handling during installation

Compatibility

Confirmed compatible with 581BTV060115AL, 581BTV060150AL, and 581BTV060115ML units. Additional compatible models may apply; consult the full fits-models list from the manufacturer documentation.

Installation Notes

Installation is performed by a qualified HVAC technician. Disconnect and lock out electrical power to the air handler or furnace before accessing the blower compartment. Remove belt tension before pulling the existing pulley, and inspect the drive belt for wear before reassembly. Verify bore and shaft alignment after seating the new pulley to prevent premature belt wear or vibration.

Technical Specifications

• Outer Diameter: 4.25 inches
• Bore Size: 0.625 inches
• Application: Blower
• Package Length: 21.7 inches
• Package Width: 5.4 inches
• Package Height: 3.1 inches
• Weight: 1.125 pounds

Standard Information

• Brand: RCD
• Manufacturer Part Number: kr11az406