tool-free head replacement without system drainage

the integrity of the heat pump's refrigeration cycle depends on the precise shifting of the internal slider

and blower fan to ensure safe and reliable unit operation

meeting original manufacturer standards for peak cooling efficiency

Browning 2AK74H Sheave 318423-701 tool-free head replacement without systemThe Browning 2AK74H Sheave is a precision engineered 7. 25" outside diameter drive component designed for dual groove power transmission systems. Manufactured from high grade ASTM A48 Class 30 gray cast iron, this double groove sheave provides the structural rigidity required to manage belt tension and minimize vibration in demanding HVACR blower and motor applications. Engineered for maximum versatility, it is compatible with 3L, 4L, and A section v