Martin, that is probably very true. 054 145 165 LX is what me and my friend Joakim have discussed a little and we think it is the new number of the part, replacing the old number ending with "D" or "L". Could be that, at least.
My mechanics shop is probably asking roughly 700 Euros for (replacement of) mine. But I've found one pump at a V.A.G dealer asking around 500 EUR for the pump.
The case is yet to be solved, and my wallet isn't the fattest currently.
I need new springs and schocks aswell.