Parts Geek - For 1977-1978 GMC K35 Heater Core 34355HG Heater Core Aluminum -- with A/C. 1977-1978 GMC K35. Notes: Heater Core Aluminum -- with A/C. Ensure Proper FitTo confirm that this part fits your vehicle, enter your vehicle's Year, Make, Model, Trim and Engine in the Compatibility Table.
