This is a pic looking from the ground up and there is a crack in the spot I have circled. It is the black plastic casing at the bottom. Does anyone know if that case is part of the radiator or if it can be replaced as one piece? Thanks for any help and by the way I'm under the 60K warranty(drivetrain) and I'm guessing this isn't covered? This is the passenger side it is on and the crack is the straight white line I drew.