[rohrmann]

That thin plastic cover on the OEM hoses does nothing for the strength of the hose. If the orange or black hose is not leaking or bulging, there really isn’t any reason to replace them. We had one short hose from the pump to the manifold that was bulging a number of years ago, and I replaced it with a much shorter hose made by a local auto parts shop. They will not carry the thin hoses.