4 way valve assembly

A 4‑way valve assembly is the refrigeration reversing valve used in heat‑pump and split systems to reverse refrigerant flow between heating and cooling modes, enabling reliable mode change and facilitating field replacement. Offered as a Bosch parts‑category service component, it restores OEM fit and function during repairs while simplifying installation for technicians. I was unable to locate Bosch North America documentation for part number 8733956483; this description is based on Bosch spare‑parts listings and service manuals. (bosch-homecomfort.com)