Quick take
Use HAF-QIN / DA97-17376B or a compatible HAF-QIN cartridge with verified fit. Samsung support has also identified HAF-QIN for this model family.
Correct replacement family
Samsung’s HAF-QIN compatibility list includes RF23A9671**.
Check the full model suffix
Use the complete model code from the appliance label because finish and market suffixes vary.
OEM performance baseline
Samsung HAF-QIN provides the manufacturer-supported reference for fit and replacement expectations.
Compatible filters
Compare model-level certification rather than assuming all cartridges marketed for RF23A9671 perform identically.