1) Automotive technology 2) Engine cooling system
Found on
https://www.crosswordclues.com/clue/heater-core
A heater core is a radiator-like device used in heating the cabin of a vehicle. Hot coolant from the vehicle`s engine is passed through a winding tube of the core, a heat exchanger between coolant and cabin air. Fins attached to the core tubes serve to increase surface for heat transfer to air that is forced past them, by a fan, thereby heating t....
Found on
http://en.wikipedia.org/wiki/Heater_core
No exact match found.
