This a Cast Aluminum direct replacement for failures in the Coolant Flange (038121121) causing coolant leaks on 1.9TDI engines. Replace this plastic part with our Lifetime Warranty High Quality Aluminum Cast parts for years of trouble free use. Mates to the the factory hoses for a perfect OEM fitment. Fits: 1999-2005 Mk4 Golf/Jetta/Beetle 1.9TDI |