Are you talking about the raw sea water pump? If so when mines was changed on my 2020 albeit on a B34, it was all done (by engineer) from front of engine compartment, no need to touch engine mounts. I think it was just four bolts to be removed. One was rusted hard so needed to be drilled out.
Our problem arose at end of a weekend before I was planning to take friends out the following weekend so had to get it done during week sharpish hence engineer.