Clue: Fix eg Oxford house's exterior with flipping unpleasant look about it (6)
Answer: REHEEL
Explanation: Definition: Fix eg Oxford
 **1st and last letters of**(…'s exterior) "house" **contained in**(with … about it) **reversal of**(flipping, in a down clue) LEER(an unpleasant, suggestive look).
Defn: …/to replace a specific worn-out part of a shoe, an example of which/eg. is an Oxford.