4 way valve assembly

Bosch 4‑Way Valve Assembly (P/N 8733956487) is a service replacement reversing valve used in ductless and four‑way cassette heat‑pump systems to reverse refrigerant flow for heating and cooling mode changes. Designed for professional HVAC service, the assembly facilitates field repairs and restores reliable mode‑switching operation on compatible Bosch heat‑pump and cassette units, simplifying maintenance without altering system controls or refrigerant circuit layout. (bosch-homecomfort.com)