The Lennox 11K55 (OEM part number 104120-04) Harness-Wiring Unit is a genuine replacement part designed for use in select Lennox residential and light commercial HVAC systems. This factory-assembled wiring harness provides critical electrical connections between internal components such as the control board, blower motor, gas valve, pressure switches, and safety controls.Key Specifications:

• OEM Part Number: 104120-04
• Lennox Reference Number: 11K55
• Type: Pre-assembled wire harness unit
• Function: Facilitates safe and accurate electrical communication across HVAC components
• Wire Gauge: Multi-gauge wire bundle for varied load requirements
• Connectors: Factory-installed multi-pin plugs and quick-disconnect terminals
• Insulation: High-temperature rated wiring with flame-retardant sheathing
• Length: Configured for optimal routing within the unit (exact length varies by application)
• Installation: Plug-and-play design for fast service replacement
• Compatibility: Fits specific Lennox furnaces and air handlers — verify model compatibility via OEM documentation
• Certifications: UL-listed components for safety and code compliance

This harness is ideal for restoring proper function during repair or replacement of damaged or corroded internal wiring. It helps maintain original system performance, reduces risk of short circuits, and ensures compliance with Lennox system standards.Available now at Beenimax.com — your trusted source for OEM Lennox HVAC parts.