The DAZA equipped TTRS and RS3 turbocharger uses a slightly different coolant fitting compared to the coolant fitting on the engine block. Dont fight with welding another OE fitting to another fitting to make a custom coolant line.  The best thing about these fittings are that they work with the OE O-ring and are compatble with any 6an hose end on the market. What does that mean for you?  There is less time trying to find parts to plumb your turbo.   Fits B03 07K145701J 18559700021 07K145701J 07K145701L
 
You can buy our mating 6an hose ends here.