In the front timing cover of my 2004 Mazda 2.3L there is a bushing / seal of some sort that seals the joint between a feed line in the timing cover and the front of the engine block. It is is hard and not in good condition. I believe this oil feed line is for the VVT. I can't seem to find a P/N for this seal. Is it available? Nay options if it is not available.