I had a similar
problem, except it was ECP who provided the wrong part. They gave me a similar one for a TDI. Make sure the housing is the same, and check the part numbers match from the part number Sticky thread in this section.
By the way, if you exchange your broken Bosch unit it will be nearer £50 ish (maybe less, i forget) with ECP. ...or if you get a daft branch they will agree to the swap price, and then forget to see it through, if you go in person. Can happen! ;-)