Can you handle the pressure?! The Koyo Hyper Radiator cap, for intelligent tuners who demand to extract every ounce of cooling efficiency from their athletic machines. By increasing the coolant pressure and raising its boiling point, the faster your motor is relieved of excessive engine heat. The Koyo Hyper radiator Cap withstands an open valve pressure rating of 1.3kg/cm2, adding under your hood the desired extra toughness and an elegant touch of style.
Note: Use with Koyo OE replacement radiators with micro cap filler neck.
