Crossword Genius

Fights after developing rage for car parts (9)

Ross

I believe the answer is:

gearboxes

I'm a little stuck... Click here to teach me more about this clue!

'car parts' is the definition.
The answer and definition can be both man-made objects as well as being plural nouns.
Maybe you can see a link between them that I don't see?

'fights after developing rage' is the wordplay.
'fights' becomes 'boxes'.
'after' is a charade indicator (letters next to each other).
'developing' indicates an anagram (letters developed into a new form).
'rage' is an anagram of 'gear'.
'boxes' put after 'gear' is 'GEARBOXES'.

'for' is the link.

Can you help me to learn more?

(Another definition for gearboxes that I've seen is " found in cars?".)

I've seen this clue in The Mirror.
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