The Lennox 13K20 (part number 104159-01) is a genuine OEM secondary high-pressure wiring harness used in Lennox commercial and residential HVAC systems. Designed to handle elevated pressure controls, this harness supports safe and efficient communication between high-pressure switches and system controls. Built to meet rigorous manufacturer standards, it ensures dependable performance and long-term durability.Specifications:
- Part Type: Secondary High-Pressure Wiring Harness
- Lennox Part Numbers: 13K20 / 104159-01
- Wire Gauge: 18 AWG multi-strand copper (typical)
- Connector Type: Factory-installed quick-connect terminals
- Length: Approximately 36–42 inches (varies by production batch)
- Jacket Material: High-temp rated thermoplastic insulation
- Operating Voltage: 24V control circuit
- Temperature Rating: -40°F to 221°F (-40°C to 105°C)
- Application: Links high-pressure safety switches to control board
- Compatibility: Confirm fitment with model-specific Lennox units
- Standards: UL listed; meets Lennox OEM specifications