I needed to get to that part of the motor for a water hose. It was under the cam belt cover and I couldn't even see it, and that's what triggered me doing my Boxer service. Bad news = it's a bit of work Good news = You'll fix a whole lot of issues when you're in there and be more proud and confident when finished. For parts - go to the usual sources: T Rutland, GT Car Parts, Ricambi, Maranello, Dennis McCann, etc. I also had pretty good luck with stock for BB parts at Ferrari of Denver.