Frostbite Fan/Shroud Package 2X12 High Performance For Series FB222-FB224 Radiators. Keeping your car or truck cool can be a challenge once the horsepower begins to increase. A proper cooling system is essential to maximizing your vehicles performance and increasing the longevity of your ride. Aluminum shroud and Electric Fans can improve the cooling efficiency of your radiator and eliminate parasitic power drain from factory style mechanical cooling fans. Frostbite Performance Cooling Products is pleased to announce the release of direct fit Aluminum fan shrouds to fit our very popular 2, 3, and 4-row aluminum radiators.