For 1965-1967 American Motors Marlin - HVAC Heater Control Valve Four Seasons

And 3/8 In. NPT port sizes;. Cable Operated Non-Bypass Closed Heater Valve. Heater Valve. Type: Heater Valves. Ensure that this part fits your vehicle by entering your vehicle's Year, Make, Model, Trim, and Engine in the Compatibility Table.