Delphi Heater Cores transfer heat from the engine coolant to the passenger compartment to warm passengers and defog⁄de-ice windows. Delphi\'s one-step brazing process and use of long-life alloys results in reliable, durable heater cores with excellent resistance to corrosion and erosion.All-aluminum construction contributes to lightweight, compact designs that are recyclable.Pipe and form adaptability allow quick connect interface, helping reduce assembly plant labor and improving ergonomics during manufacture.Varied core sizes (width & length) to match heat transfer and package space requirements.