OER Parts offers a wide selection of Air Conditioning and Heater Parts for your All Makes All Models. OER Parts offers All Makes All Models Air Conditioning and Heater Control Panels, All Makes All Models Air Conditioning and Heater Knobs, All Makes All Models Air Conditioning and Heater Levers and Cables, All Makes All Models Air Conditioning and Heater Relays, All Makes All Models Air Conditioning and Heater Switches.