Sketch pub and part of tractor (7)

I believe the answer is:

drawbar

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'part of tractor' is the definition.
The definition suggests a singular noun which matches the answer.

'sketch pub' is the wordplay.
'sketch' becomes 'draw' (I've seen this before).
'pub' becomes 'bar' (both are drinking establishments).
'draw'+'bar'='DRAWBAR'

'and' acts as a link.

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I've seen this clue in The Daily Express.

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