Proper air flow is important for a variety of functions and engine cooling is one of them.  The Cusco radiator cooling plates are designed to channel air to the radiator more efficiently than the factory covers or provide air flow direction if there isn't one.   This helps maximize cooling of the radiator, which can keep the engine temperatures consistent under racing environments.

The Cusco radiator cooling plates also add a high performance appearance to the engine compartment.  They are colored the Cusco blue and polished to a mirror shine.