Description: SERVICE WARNING: If The Orginal Engine Has Experiencd A Catastrophic Failure - Including Piston, Cylinder Bore, Valve, or Valve Seat Failure - The Intake Manifold Must Be Replaced With A New Manifold. SERVICE WARNING: If The Orginal Engine Has Experienced A Catastrophic Failure - Including Piston, Cylinder Bore, Valve, or Valve Seat Failure - The Intake Manifold Must Be Replaced With A New Manifold.