Good outcome, Herbert, glad to hear it.
---In amelyachtowners@..., <herbert@...> wrote :
@Craig, it is 54mm, the sleeve is about 1-2 mm (already installed, cannot measure it). it gives an exact fit of the tube and the baffle plate.
@Ian: we used this, fit perfect. we have an 1995 MD22A-L (made by Perkins)
1 hour Testrun was ok, difference to before: the coolant tank (our step into the engine room) is not getting as hot as before, cooling system seems to work more efficient.