How much does it cost to replace a engine on a BMW 3351 w/turbos new or used?

Hello, It is easy to quote an individual item like a belt, alternator, control module, etc, but quoting an engine replacement means inspecting to understand what items must be replaced, if the engine needs to be replaced, and sourcing parts at the time of the service. These factors make quoting a large job difficult, especially over the internet. I do recommend getting at least two quotes. You will want a reputable shop, and it's good to keep in mind that different shops use different guides for labor time, as well as charging different shop rates.