This part is the plastic manifold that connects one of the front-to back coolant hoses to the engine water pipes on later wbx (syncro) engines, in the RH corner of the engine bay. They are prone to developing a weep around the end cap which faces outwards to the RHS of the vehicle (you need to get your head under the driveshaft and look up past the starter to see it when fitted)
Aidan Talbot was kind enough to send me a couple of the above parts, to investigate the feasablility of a repair technique after I discovered mine was starting to lose a tiny amount of coolant, the part now being NLA from VW
The downer is that these are manufactured from a (non-glueable) glass-loaded nylon, which is good for strength and thermal stability but the end cap was ultrasonically welded on, which is where the crack starts.
After a quick bit of fast-track R&D combined with some good fortune, the upshot is that an exchange repair service for all similar types of coolant manifold/tower should be available pretty soon
I won't be able to simply sell a repair "bung" as machining of the manifold is necessary to remove the old cap, but costs should be very reasonable. It is one of the coolant system king-pins, after all!
More later.
