Radium Engineering 08+ SUBARU STI ONLY FPR Kit Color:Green For a maintenance-free solution

For a maintenance-free solution

and adapters for a swift and painless installation

still with more grip and quicker response time than ever before

-Coolant hoses and fittings

Radium Engineering 08+ SUBARU STI ONLY FPR Kit Color:Green For a maintenance-free solutionThis kit is designed for use in the USDM 2008 2019 Subaru WRX STi (EJ257 only) and replaces the OEM fuel pressure regulator and damper assembly, shown below. The factory STi fuel line routing uses a quasi dead end system that circulates fuel through the regulator, bypassing the engine. Fuel is only routed to the engine when there is demand. The Radium FPR kit replaces the factory regulator and re routes fuel to cycle through the engine's rails before