The Nissens HVAC Heater Core - 70522 is a component used in heating, ventilation, and air conditioning systems. It is designed to transfer heat from the engine to the interior of a vehicle, providing warmth and comfort for passengers. This product is made by Nissens, a leading manufacturer of automotive cooling and thermal management solutions. The heater core is made of high-quality materials and is designed to withstand extreme temperatures and provide efficient heat transfer. It is a vital part of the HVAC system and ensures that the vehicle's interior remains at a comfortable temperature, regardless of the weather outside.