leak-free mechanical interface

This 1/8" NPT unit is a staple for technicians servicing residential and commercial cooking equipment

The bronze body construction is paired with brass trim and a high-grade Teflon (PFA) seat

When temperatures drop below 32°F

Dual-Rated Performance: Consolidates a 50 MFD compressor lead and a 5 MFD fan lead into a single round-case footprint

Carrier 330539-757 Coupling Box 323055-751 leak-free mechanical interfaceThe Carrier 330539 757 Coupling Box is a critical OEM replacement component designed for 40 inch tall condensing gas furnaces. This genuine furnace coupling box kit replaces older ICP part numbers, including 320721 768, ensuring a precise fit and restoring the factory standard seal on the secondary heat exchanger. For technicians working on Carrier, Bryant, or Payne furnaces, this kit is essential when addressing common moisture or combustion air