RADIATOR CAPS

HR Performance Products is proud to offer Northern high pressure radiator caps. They are exact PSI calibrated. Don't trust your engine to a no-name cap. Opening at the wrong pressure an bleeding off coolant will cause your expensive race engine to overheat. Northern exactly calibrates their cap springs to open at the pressure stated, so your caps stays closed when it's supposed to be closed. Buy the best radiator cap and save your engine!