Williams P501618 Pilot

As a field technician, you know that a soft or unstable pilot flame is often the root cause of nuisance lockouts in older floor furnaces. The Williams P501618 Pilot Burner Assembly is the exact OEM solution required for Liquid Propane (LP) conversions and repairs, specifically engineered for the Williams Monterey Top Vent and various floor furnace models. This 90-degree left flame pattern assembly ensures the pilot flame is perfectly positioned to wrap the thermocouple, providing the millivolt signal necessary for the gas valve to hold. Designed for high-elevation compatibility and rugged residential use, this pilot burner replacement eliminates the common headache of "pilot won't stay lit" calls caused by carbon-clogged or corroded legacy parts. When you are performing a seasonal tune-up or a mid-winter emergency repair on 4505A and 6505A series units, using this genuine HVAC replacement part ensures the combustion chamber maintains a precise ignition cycle without the need for field modifications or bracket adjustments.

• Direct OEM Compatibility: Engineered specifically for Williams floor furnace models 2509621A, 3509621A, 4505A, and 6505A.
• Optimized Ignition: The 90-degree left orientation provides a stable, directional flame for reliable main burner ignition and thermocouple heating.
• Liquid Propane Precision: Factory-calibrated orifice ensures correct gas-to-air mixture for LP systems, preventing soot buildup.
• High-Altitude Ready: Designed to maintain flame stability across various elevations, reducing calls for pilot outages in mountainous regions.

Which fuel type is this pilot assembly rated for?
This specific Williams P501618 is designed exclusively for Liquid Propane (LP) systems. It is not compatible with natural gas configurations.

Will this assembly fix a pilot that won't stay lit?
If your thermocouple is functional but the flame is lifting or too small to generate voltage, replacing the pilot assembly usually resolves the issue. This part provides a clean, steady pilot flame for consistent operation.

Is this a universal HVAC part?
No, this is a model-specific component for Williams Comfort Products. Always verify the furnace model number on the rating plate before installation to ensure the bracket and 90-degree tip align with your burner tray.

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.