Like-for-like

The soccer coach made a like-for-like substitution, replacing the injured defender with another defensive player.

This is more likely to be the case if the replacement machinery is not a like-for-like replacement and involves an element of involuntary betterment with the result that, operatives require additional training […]

One example of this is that for operational and safety reasons, the swing bridge won't be functioning, but all its key mechanisms will be retained. "We'll replace components on a like-for-like basis so that it retains its magnificent appearance," Hodgson promises.