Six wheels for minister (5)
I believe the answer is:
vicar
'minister' is the definition.
(thesaurus)
'six wheels' is the wordplay.
'six' becomes 'vi' ('vi' can be a synonym of 'six').
'wheels' becomes 'car' (car wheel is a kind of wheel).
'vi'+'car'='VICAR'
'for' is the link.
(Other definitions for vicar that I've seen before include "See stand-in" , "One preaches" , "Man with a dog collar" , "Parson" , "Member of the clergy" .)