Williams P321888 Manifold Adapter

The Williams P321888 Manifold Adapter is a precision-engineered OEM replacement part designed specifically for residential and commercial Williams Forsaire furnaces equipped with a standing pilot system. As a veteran-grade HVAC replacement part, this adapter ensures a secure, leak-free connection between the gas valve and the burner manifold, critical for maintaining proper manifold gas pressure. Furnace manifold repair often requires specific components like the P321888 to ensure the burner assembly receives consistent fuel flow. This manifold adapter for standing pilot systems is compatible with several Williams wall heaters and counterflow models, including 3508, 5008, and 6508 series top vent units, as well as 4007 and 6077 direct vent series. When performing gas furnace maintenance, installing a genuine Williams P321888 ensures that your equipment meets original factory specifications for combustion efficiency and safety. Its heavy-duty construction is built to withstand the high-temperature environment of the combustion chamber, providing long-term reliability for professional contractors and technicians.

• Exact OEM Compatibility: Engineered specifically for Williams Forsaire silver and mahogany models with standing pilot assemblies.
• Durable Construction: Built with high-grade materials to prevent fatigue and corrosion within the furnace gas manifold.
• Optimized Gas Flow: Ensures precise alignment for stable fuel delivery and peak combusing efficiency.
• Simplified Installation: Direct-fit design replaces obsolete manifold adapters without the need for field modifications.

Is the P321888 compatible with electronic ignition furnaces?
No, this specific adapter is designed exclusively for standing pilot models. Electronic or intermittent pilot systems typically require the P321887 adapter.

Will this adapter fit both Natural Gas and Liquid Propane units?
The Williams P321888 Manifold Adapter is a structural component and does not contain the orifice. It is compatible with both fuel types, provided the correct orifice is installed for your specific gas application.

Can I use this for non-Williams brand furnaces?
This is a manufacturer-specific part. To ensure safety and proper operation, it should only be used as a replacement part for Williams units listed in the technical documentation.

This item is not eligible for free shipping.

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.