Description
The Weil McLain 383-500-657 is a genuine OEM 4″ Flue Outlet Pipe Adapter designed specifically for compatible Weil McLain boiler systems. This adapter provides a reliable, properly sealed transition at the flue outlet, ensuring safe and efficient exhaust venting from your boiler to the flue pipe.
Key Features
- Genuine Weil McLain OEM replacement part for assured fit and compatibility
- 4″ flue outlet diameter for precise, leak-free pipe connections
- Engineered to maintain proper draft and combustion exhaust flow
- Durable construction designed to withstand high-temperature flue gas conditions
- Supports code-compliant venting installations on compatible Weil McLain boiler models
- Direct drop-in replacement to simplify service and reduce downtime
Application
This flue outlet pipe adapter is intended for use with select Weil McLain boiler models requiring a 4″ flue connection. It is an essential component for technicians performing boiler installations, replacements, or maintenance where a secure and properly sized flue outlet transition is required. Always verify compatibility with your specific Weil McLain boiler model before installation.
Why Choose Genuine Weil McLain Parts?
Using genuine OEM components ensures your boiler system operates at peak efficiency and remains compliant with manufacturer specifications and warranty requirements. Weil McLain is a trusted name in hydronic heating, and their replacement parts are built to the same exacting standards as original equipment.







Reviews
There are no reviews yet.