Climate control components help regulate temperature and airflow inside your 1979 K20, keeping the cabin comfortable in both hot and cold weather. Over time, heater and air-conditioning components can wear out, leak, or stop operating properly, making replacement parts an important step in maintaining a properly functioning interior climate system.
OPGI offers seventeen Heater & AC parts designed to fit your vehicle correctly. From heater cores and control cables to vents, ducts, actuators, and climate control components, you’ll find quality parts from trusted brands including Old Air Products and Vintage Air to help restore proper heating and air-conditioning operation.
Every purchase is backed by our Price Match Guarantee and OPGI’s 60-day return policy. Orders ship quickly, or you can visit our Southern California showroom to see select components in person.