Weil-mclain 386700671 SGO9S Section Assembly

Product Description

The Weil-McLain 386700671 is a SGO9S Section Assembly designed for use in Weil-McLain cast iron boiler systems. Section assemblies are core structural and heat-transfer components in hydronic heating equipment. They form the main body of a cast iron sectional boiler, channeling hot combustion gases while transferring heat into the water circulating through the system. HVAC technicians and heating contractors rely on these assemblies when rebuilding, repairing, or replacing sections on existing boiler installations. The SGO9S designation refers to the specific boiler model series this assembly is engineered to fit, ensuring proper alignment, sealing, and thermal performance within the boiler block. Cast iron section assemblies must meet tight dimensional tolerances so that push nipples, gaskets, and tie rods seat correctly across adjacent sections. Using a properly matched OEM section assembly like the 386700671 helps maintain system efficiency and reduces the risk of leaks or heat loss at section joints. This part is intended for professional installation by licensed heating technicians familiar with cast iron boiler assembly procedures. It is a heavy-duty component, reflecting the robust construction characteristic of Weil-McLain cast iron boilers, which are known for long service life in residential and light commercial heating applications. When ordering replacement boiler sections, always verify the model number and section count of the existing boiler to confirm compatibility. This assembly ships as a complete section unit ready for integration into the boiler block during a service or rebuild procedure.

• OEM section assembly engineered specifically for the Weil-McLain SGO9S boiler series
• Cast iron construction for long-lasting heat transfer performance in hydronic heating systems
• Designed for accurate fit with push nipples, tie rods, and gaskets for leak-free section joints

Product Highlights

The Weil-McLain 386700671 SGO9S Section Assembly is a heavy-duty OEM replacement component built for cast iron sectional boiler repair and rebuilding. It delivers precise fitment and durable performance for hydronic heating system maintenance.

Product Information

Standard Information

• Brand: WEIL-MCLAIN
• Manufacturer Part Number: 386700671

Technical Specifications

• Item Type: Parts
• UPC: 672619129450
• Weight: 1195 pounds