... 1) Meterial:iron,steel,aluminum,Plastic tank 2) High heat transfer,superior corrosion. 3) OEM Service Truck Heater RadiatorSIZE:Core size 680 ... ; 9425001703; 9425003203; 9425003103 9425001503; 9425000903.Materials: Copper,iron,steel and aluminum.Suitable for truck and trailer,Customized sizes are accepted,OEM ...