Valve Spring Change on 2011-15 Subaru 2.5L FB DOHC Engines
The purpose of this bulletin is to announce a change to the valve spring specifications as well as a design change. The coils of the new valve springs are different in shape which use ellipse shaped wire instead of round wire. The lower coils of the spring are closer together and install towards the cylinder head, upper coils are further apart install towards the spring retainer end. The new springs also have Green paint to help identify them.