How do you tell the difference between a 47364 and a 12433 Aquadimmer Diverter/flow cartridge?
These are common cartridges within Grohe Dual outlet showers.
Other than identifying your shower here, you can also compare the cartridges rear configuration.
First, remove the cartridge from the shower
If the fat pin is on the right hand side and the long opening is on the top, this is the Grohe 47364 Aquadimmer Cartridge
If the fat pin is on the left and the long opening is on the top, as above, this is the Grohe 12433 Aquadimmer Cartridge.