While they share the same base series

This unit ensures precise circuit opening and closing

technicians rely on this specific OEM McQuay part to match the exact tolerances required for long-term reliability

Industrial Durability: Manufactured from high-quality synthetic elastomer to withstand the rigorous cycling and pressure fluctuations of industrial HVAC systems

This component is the direct replacement for 50DK501891

Browning 3L330 Belt 321702-401 While they share the sameThe Browning 3L330 Belt is a heavy duty fractional horsepower (FHP) V belt engineered for reliable performance in light duty industrial and HVAC applications. Featuring a 3L cross section with a 3 8 inch top width and a 7 32 inch thickness, this wrapped construction belt is designed specifically for small sheave diameters where flexibility is paramount. Its 33 inch outside diameter and 32. 3 inch pitch length ensure precise tensioning and efficient