The Lennox 31J91 – Baso Y90MF-9717D LP Pilot Orifice ensures precise LP gas flow control for reliable pilot flame performance in Lennox furnaces and heating systems. Engineered for accurate metering and consistent ignition stability, this OEM LP pilot orifice delivers dependable operation and maintains optimal combustion efficiency. Ideal for technicians performing maintenance or repair requiring an exact-fit replacement part.

 

Technical Specifications:

 

• Part Number: 31J91
• Manufacturer Model: Baso Y90MF-9717D
• Component Type: LP Pilot Orifice
• Gas Type: Liquid Propane (LP)
• Application: Lennox furnaces and heating systems
• Function: Regulates gas flow to pilot assembly for stable ignition
• Compatibility: OEM-specific replacement for select Lennox models