OER Parts offers a wide selection of Air Conditioning and Heater Parts for your 1958 Dodge D300 Pickup. OER Parts offers 1958 Dodge D300 Pickup Air Conditioning and Heater Control Panels, 1958 Dodge D300 Pickup Air Conditioning and Heater Knobs, 1958 Dodge D300 Pickup Air Conditioning and Heater Levers and Cables, 1958 Dodge D300 Pickup Air Conditioning and Heater Relays, 1958 Dodge D300 Pickup Air Conditioning and Heater Switches.