A competition grade fuel cell provides maximum performance and safety for high performance vehicles. To learn why a certified fuel cell is superior to a fabricated tank. The heart of the fuel cell is the bladder (shown below in green).
Radium RA-Series FPR Fuel Pressure Regulator Kit for Subaru STI 08-21 EJ257
Radium Engineering RA-Series Fuel Pressure Regulator Conversion Kit - Black
Radium Replacement Yellow Fuel Cell Foam Half Block for RA-Series Fuel Cell
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Radium Engineering RA Series Fuel Pressure Regulator Conversion Kit Black
RADIUM Engineering 20-0965 FPR Kit for 08-21 Subaru STI RA Series