Radium Engineering
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Radium Engineering RA-Series Fuel Pressure Regulator Kit - Fits 08-21 Subaru STI
$269.95
$269.95
This kit is designed for use in the USDM 08-21 Subaru WRX STi (EJ257 only). It 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.
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Applications
