Fuel System

Your Subaru fuel system includes the fuel pump, fuel injectors, and other important bits like the fuel pressure regulator and fuel rails. These parts work together to delivery the proper amount of fuel to your Subaru engine. If you increase the demand for fuel -- by running more turbo boost, for example, you may need to increase the supply of fuel. Note, though, that if you already have enough fuel capacity, adding larger fuel injectors or a larger fuel pump will NOT increase power in any way.

Also note that the ECU is not able to sense what size fuel injectors have been installed. if you upgrade the injectors to a larger size, you have to tell the ECU using custom ECU tuning.

AEM Drop-In Fuel Pump Upgrade 2008+ STI/2008-2014 WRX/2005-2009 LGT/OBXT Quick View
AEM Drop-In Fuel Pump Upgrade 2008+ STI/2008-2014 WRX/2005-2009 LGT/OBXT $108.00 $179.00
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DeatschWerks 300c Drop-In Fuel Pump Upgrade 2008+ STI/2008-2014 WRX/2005-2009 LGT/OBXT Quick View
DeatschWerks 300c Drop-In Fuel Pump Upgrade 2008+ STI/2008-2014 WRX/2005-2009 LGT/OBXT $189.00

DeatschWerks DW200 Drop-In Fuel Pump Upgrade 2002-2007 WRX/STI Quick View
DeatschWerks DW200 Drop-In Fuel Pump Upgrade 2002-2007 WRX/STI $99.00
DeatschWerks DW300 Drop-In Fuel Pump Upgrade 2002-2007 WRX/STI, 2005-2007 LGT/OBXT Quick View
DeatschWerks DW300 Drop-In Fuel Pump Upgrade 2002-2007 WRX/STI, 2005-2007 LGT/OBXT $169.00

Walbro Fuel Pump Upgrade 2002-2007 WRX/STI Quick View
Walbro Fuel Pump Upgrade 2002-2007 WRX/STI $115.00 $125.00
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DeatschWerks Top Feed Fuel Injectors for WRX/STI Quick View
DeatschWerks Top Feed Fuel Injectors for WRX/STI from $349.00 $839.00
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DeatschWerks Side Feed Fuel Injectors for WRX/STI Quick View
DeatschWerks Side Feed Fuel Injectors for WRX/STI from $589.00 $679.00
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Cobb Tuning/Injector Dynamics Top Feed 1300cc Fuel Injectors Quick View
Cobb Tuning/Injector Dynamics Top Feed 1300cc Fuel Injectors $960.00
Injector Dynamics Injectors Quick View
Injector Dynamics Injectors from $520.00
COBB Subaru Fuel Pressure Regulator Kit 2008+ STI Quick View
COBB Subaru Fuel Pressure Regulator Kit 2008+ STI $300.00

Fuel Pump Assembly 2008-2014 STI Quick View
Fuel Pump Assembly 2008-2014 STI $349.00
In-Tank Fuel Filter 05-07 WRX and 2004-2006 WRX STI Quick View
In-Tank Fuel Filter 05-07 WRX and 2004-2006 WRX STI $89.95
In-Tank Fuel Filter 2007 WRX STI Quick View
In-Tank Fuel Filter 2007 WRX STI $94.45

Underhood Fuel Filter 2002-2004 WRX Quick View
Underhood Fuel Filter 2002-2004 WRX $26.00
Subaru Fuel Tank Gasket 2008-2014 WRX/STI Quick View
Subaru Fuel Tank Gasket 2008-2014 WRX/STI $20.00

Aeromotive Top Feed Fuel Rail 2002-2014 WRX/2007+ STI Quick View
Aeromotive Top Feed Fuel Rail 2002-2014 WRX/2007+ STI $183.37
Subaru Fuel Pump Housing Gasket 2002-2007 Impreza/WRX/STI, 2003-2008 Forester XT Quick View
Subaru Fuel Pump Housing Gasket 2002-2007 Impreza/WRX/STI, 2003-2008 Forester XT $6.00
Top Feed Conversion Kit 2004-2006 STI Quick View
Top Feed Conversion Kit 2004-2006 STI $619.00

DeatschWerks Top Feed Conversion Kit 2004-2006 STI Quick View
DeatschWerks Top Feed Conversion Kit 2004-2006 STI from $579.00
Top Feed Conversion Kit No TGV Housings 2004-2006 STI Quick View
Top Feed Conversion Kit No TGV Housings 2004-2006 STI $319.00
Injector Dynamics Plug-and-Play Wiring Harness Set Quick View
Injector Dynamics Plug-and-Play Wiring Harness Set $48.00 $60.00
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Subaru Fuel Line Update Kit 2002-2003 WRX Quick View
Subaru Fuel Line Update Kit 2002-2003 WRX $89.00
Cobb Flex Fuel Complete Package 2008-2014 WRX, 2008+ STI Quick View
Cobb Flex Fuel Complete Package 2008-2014 WRX, 2008+ STI $800.00

Cobb Flex Fuel Ethanol Content Sensor Kit 2008-2014 WRX, 2008+ STI Quick View
Cobb Flex Fuel Ethanol Content Sensor Kit 2008-2014 WRX, 2008+ STI $600.00
Cobb Fuel Pressure Sensor Kit 2008-2014 WRX, 2008+ STI Quick View
Cobb Fuel Pressure Sensor Kit 2008-2014 WRX, 2008+ STI $225.00
Cobb Tuning Top Feed 1050x Fuel Injectors Quick View
Cobb Tuning Top Feed 1050x Fuel Injectors $540.00

Cobb Flex Fuel Ethanol Sensor Kit 2015+ WRX Quick View
Cobb Flex Fuel Ethanol Sensor Kit 2015+ WRX $600.00
Injector Dynamics Top Feed Conversion Kit 2004-2006 STI Quick View
Injector Dynamics Top Feed Conversion Kit 2004-2006 STI from $710.00

Injector Dynamics Top Feed Conversion Fuel line Kit 2004-2006 STI Quick View
Injector Dynamics Top Feed Conversion Fuel line Kit 2004-2006 STI $250.00
Cobb Flex Fuel Complete Package 2004-2007 STI, 2006-2007 WRX Quick View
Cobb Flex Fuel Complete Package 2004-2007 STI, 2006-2007 WRX $800.00
Cobb Flex Fuel Ethanol Content Sensor Kit 2004-2007 STI, 2006-2007 WRX Quick View
Cobb Flex Fuel Ethanol Content Sensor Kit 2004-2007 STI, 2006-2007 WRX $600.00

Cobb Fuel Rail Kit 2008+ STI Quick View
Cobb Fuel Rail Kit 2008+ STI $220.00
Cobb Fuel Rail Line Kit 2008+ STI Quick View
Cobb Fuel Rail Line Kit 2008+ STI $495.00

Cobb Fuel System Package 2008-2017 STI Quick View
Cobb Fuel System Package 2008-2017 STI $1,600.00

Cobb Tuning Fuel Rails/Line Kit Package 2008-2017 STI Quick View
Cobb Tuning Fuel Rails/Line Kit Package 2008-2017 STI $690.00
Subaru Fuel Pump Cover Gasket 2002-2007 Impreza/WRX/STI, 2003-2008 Forester XT Quick View
Subaru Fuel Pump Cover Gasket 2002-2007 Impreza/WRX/STI, 2003-2008 Forester XT $13.00