Imcolock or any pipe insulation would work. I just wanted to enclose the entire thing (brackets included). I probably did not spend more than $ 20 - $ 30 for sheetmetal and fiberglass.

OEM design was so bad I couldn't believe FORD did it that way . Not only there is no corrosion protection, but heat loss as well from all these exposed steel lines of coolant. Radiator would not be necessary..