Evo X Radiator Caps

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Buy Evo X radiator caps. The Evo X factory pressure is 1.1 bar (~15psi). Higher pressure 1.3 bar (~18psi) caps are widely used with aftermarket radiators such as the Koyorad. A higher pressure cap raises the boiling point of your coolant. The cap spring opens at the PSI rating and coolant moves to the overflow tank, returning when the pressure is back to normal.
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