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The Turbosmart PowerPort spring rated at 4 inHg is a spare spring for PowerPort blow‑off valve assemblies intended to alter the valve's preload and help regulate intake air pressure. Offered as a service or tune option, the 4 inHg spring provides a defined valve response point for applications that require that spring rate. It is supplied as a replacement component for Turbosmart PowerPort valve systems.
Turbosmart BOV Power Port Spring 4 In/Hg
