Lennox 58K57 Blower Pulley 9.75" OD Adjustable Bore

The Lennox 58K57 is an OEM replacement blower pulley designed for residential and light commercial HVAC systems. This genuine Lennox component features a 9.75-inch outside diameter and comes without a hub, allowing for custom bore sizing to match your specific motor shaft requirements.

Key Features:

• 9.75" outside diameter for optimal belt contact and power transmission
• No hub design allows for adjustable bore sizing from 0.375" to 1.5"
• Genuine OEM Lennox part ensures proper fit and reliability
• Compatible with V-belt drive systems in forced-air furnaces and air handlers
• Durable construction for long-lasting performance

This pulley connects to the blower motor shaft and drives the blower wheel through a V-belt, controlling airflow speed and system efficiency. The hubless design provides flexibility for HVAC technicians to bore the pulley to the exact shaft diameter needed for precise motor-to-blower coupling. Proper pulley selection and installation are critical for maintaining optimal system performance and preventing premature belt wear.