This is a Aisin Subaru 3 port water pump.
This water pump comes complete with a water pump gasket.
Aisin water pumps are a high quality Japanese manufactured aftermarket unit, not to be confused with some of the spurious copy/aftermarket units available.
This fits ALL Turbo Impreza's with Manual transmission / 3 port pump fitted - 1992-2014
If in doubt please contact us and we can check via chassis / reg number.