Collects spare parts (5)
I believe the answer is:
reaps
'collects' is the definition.
(reaping is a kind of collecting)
'spare parts' is the wordplay.
'parts' indicates anagramming the letters (the parts of the original word ordered differently).
'spare' with letters rearranged gives 'REAPS'.
(Other definitions for reaps that I've seen before include "crops" , "Gleans or harvests" , "Harvests with strange spear" , "Cuts, gathers grain" , "Harvests (a crop)" .)