New part ordered somewhere in Belgium (7)
I believe the answer is:
antwerp
'somewhere in belgium' is the definition.
(Belgian city)
'new part ordered' is the wordplay.
'ordered' is an anagram indicator.
'new'+'part'='newpart'
'newpart' with letters rearranged gives 'ANTWERP'.
(Other definitions for antwerp that I've seen before include "North Belgian port" , "Busy Belgian port" , "Belgian port and province" , "Van Dyck birthplace" , "New part of Dutch city" .)