I assume you mean the engine mount bushes? You need to support the engine and take the engine mounts off the car. If one bush has gone then the others won't be far behind, it's best to replace all four.
If the socket method above doesn't work, cut through the rubber and take the centre out then carefully hacksaw through the outer metal case of the bush and use a punch to knock it out. Press the new bush in, mine went in quite easily using a large vice and sockets.
Last edited by planenut; 24/01/23 09:50 PM.