The Lennox 19U18 PowerDrive BK72-1 cast iron finished bore pulley is designed for dependable power transmission in belt-driven HVAC and industrial applications. Manufactured from durable cast iron, this pulley provides excellent strength, vibration resistance, and long-term dimensional stability under continuous operation.

This single-groove pulley features a 6.95 inch outside diameter and a precision 1-3/16 inch finished bore, ensuring proper shaft alignment and secure mounting. It is compatible with 4L or A belts as well as 5L or B belts, making it suitable for a wide range of blower and motor drive systems. The accurately machined groove profile helps maintain proper belt tracking, reduce slippage, and minimize premature belt wear.

Lennox 19U18 is an OEM replacement pulley commonly used in belt-drive blower assemblies where exact fitment and reliable torque transfer are critical. Ideal for service replacements, repairs, or preventative maintenance in residential and commercial HVAC equipment.

Specifications

Brand: PowerDrive
Catalog Number: 19U18
Model / Part Number: 105617-01
Type: Cast Iron Finished Bore Pulley
Number of Grooves: 1
Belt Type: 4L or A; 5L or B
Bore Size: 1-3/16 Inch
Outside Diameter: 6.95 Inch
Pitch Diameter (B Belt): 6.6 Inch
Base Unit of Measure: Unit(s)
EAN / UPC: 66255156532
Gross Weight: 4.25 LB

Replacement History (Latest):
19U18
105617-01