Lennox 58L66 Burner Assembly
For service technicians handling call-backs on inconsistently igniting furnaces, the Lennox 58L66 Burner Assembly is the direct 2-burner OEM solution for restoring precise combustion performance. This genuine replacement burner assembly (catalog number 58L66, formerly LB-94731A or 50J52) is engineered for broad compatibility across Lennox furnaces as well as Allied, Armstrong, and Concord equipment. Unlike universal kits, this 2-burner furnace assembly features a durable metal construction that maintains port alignment under high-heat cycles, preventing the flame rollout and delayed ignition issues often seen with warped or carbon-clogged components. Designed for exact fitment within the burner box, it facilitates balanced fuel-to-air ratios and uniform heat distribution across the heat exchanger. Whether you are performing a seasonal overhaul or a critical emergency repair, utilizing this HVAC furnace burner ensures your system meets original factory specs for gas flow and flame stability, reducing static pressure issues and maximizing efficiency in residential heating applications.
Key Benefits:
- OEM Precision: Direct replacement for Lennox 58L66 and LB-94731A, ensuring no-drill installation and perfect alignment with the gas manifold and ignitor.
- Balanced Combustion: The 2-burner configuration provides stable flame characteristics to prevent short-cycling and ensure consistent heat transfer.
- Long-Term Durability: Heavy-gauge metal construction resists thermal fatigue and port corrosion in demanding high-efficiency furnace environments.
- Multi-Brand Compatibility: Engineered for use in Lennox, Armstrong, Concord, and Ducane heating systems.
Common Questions:
What causes a Lennox burner assembly to fail?
Most failures stem from soot accumulation, moisture-induced corrosion (especially in high-efficiency units), or cracked burner ports, which lead to uneven flames and "lazy" ignition signals to the flame sensor.
Can I clean the 58L66 instead of replacing it?
While light debris can be cleared, if there is visible pitting, rust flakes, or warped metal, replacement is required to prevent hazardous gas bypass or improper combustion.
Does this assembly include the gas valve or ignitor?
This is the burner assembly only. It is recommended to inspect the hot surface ignitor and flame sensor for wear whenever replacing the burner rack.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $92.37
-65%$92.37
$32.33Product Information
Product Information
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Description
For service technicians handling call-backs on inconsistently igniting furnaces, the Lennox 58L66 Burner Assembly is the direct 2-burner OEM solution for restoring precise combustion performance. This genuine replacement burner assembly (catalog number 58L66, formerly LB-94731A or 50J52) is engineered for broad compatibility across Lennox furnaces as well as Allied, Armstrong, and Concord equipment. Unlike universal kits, this 2-burner furnace assembly features a durable metal construction that maintains port alignment under high-heat cycles, preventing the flame rollout and delayed ignition issues often seen with warped or carbon-clogged components. Designed for exact fitment within the burner box, it facilitates balanced fuel-to-air ratios and uniform heat distribution across the heat exchanger. Whether you are performing a seasonal overhaul or a critical emergency repair, utilizing this HVAC furnace burner ensures your system meets original factory specs for gas flow and flame stability, reducing static pressure issues and maximizing efficiency in residential heating applications.
Key Benefits:
- OEM Precision: Direct replacement for Lennox 58L66 and LB-94731A, ensuring no-drill installation and perfect alignment with the gas manifold and ignitor.
- Balanced Combustion: The 2-burner configuration provides stable flame characteristics to prevent short-cycling and ensure consistent heat transfer.
- Long-Term Durability: Heavy-gauge metal construction resists thermal fatigue and port corrosion in demanding high-efficiency furnace environments.
- Multi-Brand Compatibility: Engineered for use in Lennox, Armstrong, Concord, and Ducane heating systems.
Common Questions:
What causes a Lennox burner assembly to fail?
Most failures stem from soot accumulation, moisture-induced corrosion (especially in high-efficiency units), or cracked burner ports, which lead to uneven flames and "lazy" ignition signals to the flame sensor.
Can I clean the 58L66 instead of replacing it?
While light debris can be cleared, if there is visible pitting, rust flakes, or warped metal, replacement is required to prevent hazardous gas bypass or improper combustion.
Does this assembly include the gas valve or ignitor?
This is the burner assembly only. It is recommended to inspect the hot surface ignitor and flame sensor for wear whenever replacing the burner rack.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
