An injection molding apparatus comprising: a heated manifold that receives an injection fluid material from an injection molding machine, the heated manifold routing the injection fluid to a fluid delivery channel that extends and delivers the injection fluid material under an injection pressure to a gate of a mold cavity, an actuator comprising an actuator housing containing a drive member interconnected to a valve pin having a drive axis in an arrangement such that the valve pin is drivable along the axis between an upstream fully gate open position and a downstream gate closed position, the actuator housing being mounted on a surface of the heated manifold, the actuator housing being spaced a selectable distance forming a gap between actuator housing and the heated manifold, characterized in that: the apparatus includes first and second heat convectors (30, 40), each heat convector comprised of: a heat conductive leg (36, 46) disposed within the gap and mounted in heat conductive communication with the heated manifold and the leg being substantially thermally isolated from the actuator housing, and a heat conductive arm (32, 42) extending distally away from the gap such that heat is conducted from the leg to the arm and away from the actuator housing, the apparatus further includes a guide bushing and an actuator mount, the leg of the first heat convector being mounted in metal-to-metal heat conductive contact with the guide bushing and the guide bushing is in turn in metal-to-metal heat conductive contact with the heated manifold, and the leg of the second heat convector being mounted in metal-to-metal heat conductive contact with the actuator mount and the actuator mount is in turn in metal-to-metal heat conductive contact with the heated manifold. a heated manifold that receives an injection fluid material from an injection molding machine, the heated manifold routing the injection fluid to a fluid delivery channel that extends and delivers the injection fluid material under an injection pressure to a gate of a mold cavity, an actuator comprising an actuator housing containing a drive member interconnected to a valve pin having a drive axis in an arrangement such that the valve pin is drivable along the axis between an upstream fully gate open position and a downstream gate closed position, the actuator housing being mounted on a surface of the heated manifold, the actuator housing being spaced a selectable distance forming a gap between actuator housing and the heated manifold, characterized in that: the apparatus includes first and second heat convectors (30, 40), each heat convector comprised of: a heat conductive leg (36, 46) disposed within the gap and mounted in heat conductive communication with the heated manifold and the leg being substantially thermally isolated from the actuator housing, and a heat conductive arm (32, 42) extending distally away from the gap such that heat is conducted from the leg to the arm and away from the actuator housing, the apparatus further includes a guide bushing and an actuator mount, the leg of the first heat convector being mounted in metal-to-metal heat conductive contact with the guide bushing and the guide bushing is in turn in metal-to-metal heat conductive contact with the heated manifold, and the leg of the second heat convector being mounted in metal-to-metal heat conductive contact with the actuator mount and the actuator mount is in turn in metal-to-metal heat conductive contact with the heated manifold. a heat conductive leg (36, 46) disposed within the gap and mounted in heat conductive communication with the heated manifold and the leg being substantially thermally isolated from the actuator housing, and a heat conductive arm (32, 42) extending distally away from the gap such that heat is conducted from the leg to the arm and away from the actuator housing, the apparatus further includes a guide bushing and an actuator mount, the leg of the first heat convector being mounted in metal-to-metal heat conductive contact with the guide bushing and the guide bushing is in turn in metal-to-metal heat conductive contact with the heated manifold, and the leg of the second heat convector being mounted in metal-to-metal heat conductive contact with the actuator mount and the actuator mount is in turn in metal-to-metal heat conductive contact with the heated manifold.