Quick take
The OEM replacement is EveryDrop Filter 2 / EDR2RXD1. Compatible filters can be cheaper, but use exact fit and certification as the deciding checks.
Correct replacement
Whirlpool’s specifications list EDR2RXD1 for WRF767SDHZ.
Filter location
Whirlpool’s comparison data places the water filter inside this refrigerator.
Compatible options
Aftermarket EDR2RXD1 cartridges can reduce annual replacement cost.
Avoid false equivalence
A compatible cartridge may fit but carry a narrower contaminant-reduction certification than the OEM.