Lennox 54L00 Collector Box Gasket

The Lennox 54L00 Collector Box Gasket is a genuine OEM replacement part engineered to maintain a proper airtight seal at the collector box assembly of compatible Lennox furnace systems. A properly functioning collector box gasket is critical to safe and efficient furnace operation — it prevents flue gas leakage, maintains the correct pressure differential across the heat exchanger, and helps protect the integrity of the combustion process.

Key Features

• OEM Lennox replacement part — designed and manufactured to original equipment specifications
• Provides an airtight seal at the collector box to prevent flue gas and combustion byproduct leakage
• Helps maintain proper draft and pressure balance within the furnace venting system
• Supports safe, efficient furnace operation by sealing the collector box interface
• Direct replacement for worn, cracked, or damaged collector box gaskets on compatible Lennox units

Application

• Designed for use with compatible Lennox furnace models requiring SKU 54L00 collector box gasket
• Ideal for HVAC technicians performing routine maintenance, seasonal tune-ups, or combustion system repairs

Why Replace Your Collector Box Gasket?

Over time, collector box gaskets can degrade due to heat cycling, condensation, and normal wear. A compromised gasket can allow flue gases to escape into the living space, reduce heating efficiency, and trigger safety lockouts. Replacing the gasket with a genuine Lennox OEM part ensures a proper fit and restores the system to factory performance standards.

Ordering Information

• Brand: Lennox
• SKU / Part Number: 54L00
• Part Type: Collector Box Gasket