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"CP Groove" stands for Constant Pressure Groove
scorched to raise initial cold effectiveness and ease bed-in
• Direct fit for the 2003–2006 Nissan 350Z
(1) Intake Pipe
Radium Fuel Pressure Regulator FPR Kit for 2008+ STi (20-0965) Radium "CP Groove" stands for ConstantRadium Engineering fuel pressure regulator kit for 2008+ STi replaces the stock regulator and damper assembly (see photos) with this clean, easily adjustable black aluminum kit. Vehicle Fitment: 2008 2021 Subaru STi Install Notes: PDF Install Instructions Recommended for Install: Fuel Pressure Gauge Kit (20 0386) More from Radium: The factory STi fuel line routing uses a quasi dead end system that circulates fuel through the regulator, bypassing the
