The biggest pro is that Citroen's failure to supply the part put my car off the road for 4 weeks- I got yours in two days. It may be aftermarket, but I bet that it is as good as a Citroen part, as it is new not refurbished
This is not the original PSA thing. Part looks very good. The price is also attractive. Unfortunately, the thermostat inside the housing is of very bad quality. Spilled - leaked after a few days. He did not open up. I almost overheated the engine.