Appears confused over right replacement component (5,4)
I believe the answer is:
spare part
'replacement component' is the definition.
(I've seen this before)
'appears confused over right' is the wordplay.
'confused' indicates anagramming the letters.
'over' means one lot of letters go next to another.
'right' becomes 'rt'.
'appears' anagrammed gives 'sparepa'.
'sparepa'+'rt'='SPARE-PART'
(Other definitions for spare part that I've seen before include "Type of surgery" , "Replacement component" , "something put in machine?" , "Extra component for machine" .)