You may want to check if your CBFA engine code has the extra sensor on the water pump. If it does than you are limited to plastic housing pumps. If you reference my post here a few years back I tried to make an Aluminum pump work on my 2010 GTI w CBFA engine code which does have the extra sensor but I couldnt get it to work. I ended up using an OEM VW plastic housing water pump with a metal impeller and its been running fine for some time.
I don't think this will work if the extra electrical sensor is present. I'm not aware of anyone that makes a aluminum housing pump for the CBFA coded cars that have the extra electrical sensor.
