SpeedFactory Racing 1.3 Bar High Performance Radiator Cap (Type B)Our high performance radiator cap will not only improve the appearance of your vehicles engine bay, but it will also play a vital role in improving the efficiency of your engine's cooling system. The SpeedFactory Racing 1. 3 Bar High Performance Radiator Cap allows your vehicles cooling system to absorb and dissipate more heat by increasing the cooling system pressure, which allows your water temperature to raise roughly 10*F higher before reaching