the ebay pic shoes the rubber bit that goes into the bulkhead (bottom right) the plastic bit that sits inside this (bottom left) and the bit that goes around the steering column (top middle)

what you should also consider is the round metal locking plate that goes onto the clumn before anything else and locks the plastic bush into place, it has a triangular hole in the middle but it's a little smaller than the steering column so it twists on itself and locks into place to stop the bush riding up the column

there is also a metal cover that goes over the rubber bit inside the engine bay to stop everything goes soft from the heat, but not all cars had this so it may be something you haven't got fitted already but is a worthy investment