It might, it might not. That’s what a warranty on the “new” engine or transmission is important to get. It’s also important to make sure the dealership is getting an overhauled engine from the manufacturer and not just a scrap engine from the field out back.
Definitely agree! And OP should DEFINITELY make sure there is a warranty on the new engine.
Just an fyi if you didnt know, an option most dealerships may offer is a used engine with comparable mileage for significantly less cost than a brand new one. Not saying its better or worse, just that the option is often there.
If there was a good warranty on the new engine and the mileage was nearly identical, then i’d be getting it.