Please refer to http://pro.grohe.com/  and it prevails for all spare parts matching information. Bellowed are for reference only. 

– Grohe 34303 1/2″ Chiara Thermostat mixer
– Grohe 34025 Grohmaster Grohtherm 1000 Ev
– Grohe 34367 Grohtherm 3000 Thermostatic bath/shower Mixer
– Grohe 19663 Grohtherm 3000 Oval Concealed Thermostatic Shower Mixer
– Grohe 34357 Automatic 2000 Bath Mixer (Basic/Clova)
– Grohe 34021 1/2″ Grohtherm Ergomix Thermostat basin mixer
– Grohe Sentosa Mixing Valve
– Grohe 34954 1/2″ Automatic 2000 Thermostat mixer
– Grohe 19665 Grohterm 3000 Oval Concealed Thermostatic Shower Mixer
– Grohe 34650 Automatic 2000 Mixer (Basic/Clova)
– Grohe 34612 1/2″ Chiara Thermostat mixer
– Grohe 34020 1/2″ Grohtherm Ergomix Thermostat basin mixer
– Grohe 34953 mixer 1/2″ Automatic 2000 Thermostat concealed body