This is a genuine, OEM Nissan Radiator Upper Water Neck Outlet for your S14 SR20DET.

S13 SR20DET users can upgrade to this water neck and run their turbo water inlet line directly to the water neck instead of the rear of the engine, which may be difficult to get to.

NOTE: S14 Turbo Lines are required if you plan to use this Outlet with your S13 SR20DET.