Trunk component of motor solenoid (5)
I believe the answer is:
torso
'trunk' is the definition.
(both can mean a person's chest)
'component of motor solenoid' is the wordplay.
'component of' says the answer is hidden in the clue (I've seen this in other clues).
'TORSO' is hidden in the letters of 'motor solenoid'.
(Other definitions for torso that I've seen before include "Poorly-dressed child" , "Roots out in trunk of the body" , "Body, minus its head and limbs" , "Roost (anag)" , "Body's core" .)