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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
$119.98 $179.00
AEM's 340lph E85-compatible high flow in-tank fuel pump features robust internal construction that is designed to withstand the low lubricity characteristics of ethanol and methanol fuels, and is tested to work...
DeatschWerks DW65C Drop-In Fuel Pump Upgrade 2008-14 WRX / 2008-19 STI
$165.00
The DeatschWerks DW65 drop-in replacement fuel pump delivers higher flow WITHOUT the need for modifying your stock fuel pump housing. The DW65 flows 265 liters per hour (LPH), and is...
DeatschWerks 300c Drop-In Fuel Pump Upgrade 2008+ STI/2008-2014 WRX/2005-2009 LGT/OBXT
$169.00
The DeatschWerks 300c pump is a 340 lph fuel pump that is a drop-in replacement for your stock pump, delivering higher flow WITHOUT the need for modifying your stock fuel pump...
DeatschWerks 300c Drop-In Fuel Pump Upgrade BRZ/FR-S/2015+ WRX
$189.00
The DeatschWerks 300c pump is a 340 lph fuel pump that is a drop-in replacement for your stock pump, delivering higher flow WITHOUT the need for modifying your stock fuel pump...
DeatschWerks DW200 Drop-In Fuel Pump Upgrade 2002-2007 WRX/STI
$99.00
The DeatschWerks DW200 drop-in replacement fuel pump delivers higher flow WITHOUT the need for modifying your stock fuel pump housing. The DW200 flows 255 liters per hour (LPH), and is E85-compatible....
DeatschWerks DW300 Drop-In Fuel Pump Upgrade 2002-2007 WRX/STI, 2005-2007 LGT/OBXT
$169.00
The DeatschWerks DW300 drop-in replacement fuel pump delivers higher flow WITHOUT the need for modifying your stock fuel pump housing. The DW300 flows 340 liters per hour (LPH), and is E85-compatible. Pump...
Cobb Tuning/Injector Dynamics Top Feed 1300cc Fuel Injectors
$960.00
COBB Tuning is excited to release an all new 1300cc fuel injector, designed in partnership with Injector Dynamics and Bosch Motorsport. This collaboration has given us the ability to offer...
Injector Dynamics Injectors
$520.00
Injector Dynamics is renowned worldwide for manufacturing the highest performing and most tuner preferred fuel injectors available on the market today. Lesser quality fuel injectors are typically flow tested only...
COBB Subaru Fuel Pressure Regulator Kit 2008+ STI
$350.00
Are you annoyed with that 2800 rpm stumble you get while driving your 2008+ Subaru STI? Wish you could easily fix it? COBB has the answer: The COBB Subaru 2008+...
Fuel Pump Assembly 2008-2014 STI
$381.43
This 175 liter-per-hour fuel pump is big enough for most street turbo upgrades (think 20G or equivalent) you'd put on a 2008+ WRX or 2005-09 Legacy GT. We sell the...
In-Tank Fuel Filter 05-07 WRX and 2004-2006 WRX STI
$98.95
Most 2.5 liter turbo Subaru cars have a fuel filter in the fuel tank, stacked on top of the fuel pump. This one fits all 2005-2007 WRX, plus 2004-2006...
In-Tank Fuel Filter 2007 WRX STI
$94.45
Most 2.5 liter turbo Subaru cars have a fuel filter in the fuel tank, stacked on top of the fuel pump. This one fits only 2007 WRX STI.
Underhood Fuel Filter 2002-2004 WRX
$33.64 $78.99
Genuine Subaru part. Fits all 2002-04 WRX, and some 2005 WRX's. (Not for 2.5 liter cars -- they don't have an under-hood fuel filter.)
Subaru Fuel Tank Gasket 2008-2014 WRX/STI
$22.23
This OEM gasket seals the top of the fuel tank access where the pump goes in. Fits all 2008-2014 WRX and STI.
Aeromotive Top Feed Fuel Rail 2002-2014 WRX/2007+ STI
$183.37
Aeromotive's bolt-on fuel rails are CNC-milled from 6061-T6 aircraft quality aluminum.. Flow-through, top feed design eliminates hydraulic fluctuation. Plated steel mounting brackets included for direct, bolt-on installation. -8 AN ORB (O-Ring...
Subaru Fuel Pump Housing Gasket 2002-2007 Impreza/WRX/STI, 2003-2008 Forester XT
$7.00
This OEM gasket seals the top of the fuel tank access where the pump goes in. Fits all 2002-2007 WRX and STI, plus 2003-2008 Forester XT.
Top Feed Conversion Kit No TGV Housings 2004-2006 STI
$319.00
Side feed fuel injectors are annoying! There are limited replacement sizes, and they are expensive. We also think that when you get to very large injector sizes, top feed injectors...
Injector Dynamics Plug-and-Play Wiring Harness Set
$48.00 $60.00
These wiring harnesses are used to allow plug-and-play installation of Injector Dynamics fuel injectors on most Subaru cars. Set of four harnesses. Injectors not included. Fits all 2002-2014 Subaru WRX,...
Subaru OEM Fuel Pressure Regulator 2002-2007 WRX and STI (Top-Feed Injectors)
$142.77
Original equipment Subaru fuel pressure regulator. Fits 2002-2007 WRX, and 2007 STI. Does NOT fit 2004-2006 STI.
Subaru Fuel Line Update Kit 2002-2003 WRX
$89.00
This kit is the official Subaru Technical Service Bulletin (TSB) hardware to fix leaking fuel lines on the bugeye WRX cars. The kit is intended to remedy an issue where...
Cobb Flex Fuel Complete Package 2008-2014 WRX, 2008-2021 STI
$875.00
Harness the power of ethanol, while maintaining ease of ownership and the flexibility to fuel up where and when you want. Flex Fuel is a combination of hardware and software...
Cobb Stage 3+ Flex Fuel Power Package 2011-2014 STI Sedan
$6,155.00
Harness the power of ethanol, while maintaining ease of ownership and the flexibility to fuel up where and when you want. Flex Fuel is a combination of hardware and software...
Cobb Flex Fuel Ethanol Content Sensor Kit 2008-2014 WRX, 2008+ STI
$650.00
Harness the power of ethanol, while maintaining ease of ownership and the flexibility to fuel up where and when you want. Flex Fuel is a combination of hardware and software...
Cobb Fuel Pressure Sensor Kit 2008-2014 WRX, 2008+ STI
$250.00
The Cobb fuel pressure sensor kit is a plug-and-play solution for the age-old problem of not knowing whether you have enough fuel pressure. As you modify your car and the fuel requirements...
Cobb Tuning Top Feed 1050x Fuel Injectors
$540.00
The COBB 1050x Fuel Injectors provide increased fuel flow while maintaining stock idle and driveability with proper tuning. Wanting to run E85 or need more fueling for your specific application? The...
Cobb Flex Fuel Ethanol Sensor Kit 2015+ WRX
$650.00
A complete plug and play solution enabling users to convert their supported Subaru WRX to a Flex Fuel configuration without losing factory compensations. This is the easiest to use and...
AEM Drop-In Fuel Pump Upgrade 2002-2007 WRX / STI
$119.98 $150.00
AEM's 340lph E85-compatible high flow in-tank fuel pump features robust internal construction that is designed to withstand the low lubricity characteristics of ethanol and methanol fuels, and is tested to work...
Injector Dynamics Top Feed Conversion Kit 2004-2006 STI
$710.00
Convert your side-feed injector WRX STI to top-feed for better choice of injectors, better/smoother fuel flow, and improved safety. Injector Dynamics provide the absolute best fuel injectors available, and have...
Injector Dynamics Top Feed Conversion Fuel line Kit 2004-2006 STI
$250.00
This fuel line kit from Injector Dynamics is the perfect companion to the Injector Dynamics top-feed conversion kit. The kit includes 6-AN braided fuel lines, billet aluminum adapter fittings, and...
Cobb Flex Fuel Complete Package 2004-2007 STI, 2006-2007 WRX
$875.00
Harness the power of ethanol, while maintaining ease of ownership and the flexibility to fuel up where and when you want. Flex Fuel is a combination of hardware and software...
Cobb Flex Fuel Ethanol Content Sensor Kit 2004-2007 STI, 2006-2007 WRX
$650.00
Harness the power of ethanol, while maintaining ease of ownership and the flexibility to fuel up where and when you want. Flex Fuel is a combination of hardware and software...
Cobb Fuel Rail Kit 2008+ STI
$250.00
Cobb Subaru Fuel Rails are constructed of 6061 Billet Aluminum and feature black anodizing with a laser etched COBB logo. Each rail comes with -8 AN to -6 AN adapters...
Cobb Fuel Rail Line Kit 2008+ STI
$525.00
The Cobb Subaru Fuel Rail Line Kit is designed to be used along with the Cobb Fuel Rail Kit. All lines are pre-assembled with double-swivel sport crimp style hose ends...
Cobb Fuel Pressure Regulator for Fuel Rail Kit 2008-2021 STI
$325.00
The Cobb Subaru Fuel Pressure Regulator Kit is a plug-and-play solution that is simple to install. It requires no cutting of factory hoses and is multi-fuel compatible. This kit includes...
Cobb Stage 3+ Flex Fuel Power Package 2011-2014 STI Sedan
$5,515.00
Harness the power of ethanol, while maintaining ease of ownership and the flexibility to fuel up where and when you want. Flex Fuel is a combination of hardware and software...
Cobb Fuel System Package + Flex Fuel 2008-2020 STI
$2,475.00
The Subaru Fuel System Package + Flex Fuel kit includes: Fuel Rails Fuel Rail Line Kit Fuel Rail Line Kit to Flex Fuel Fuel Pressure Regulator for Fuel Rail Kit...
Cobb Fuel System Package 2008-2018 STI
$1,710.00
This is a complete fuel system upgrade for 2008+ Subaru WRX STI. For the 2015+ cars, this unlocks all the performance the factory turbo can deliver. The kit also mitigates...
Cobb Tuning Fuel Rails/Line Kit Package 2008-2021 STI
$690.00
All lines are pre-assembled with double-swivel sport crimp style hose ends and ready for installation. Stainless reinforced PTFE line with black covering has a 3" minimum bend radius which...
Subaru Fuel Pump Cover Gasket 2002-2007 Impreza/WRX/STI, 2003-2008 Forester XT
$15.15
This OEM foam gasket is for the metal cover that provides access to the top of the fuel tank and the fuel pump. Over time the foam gasket breaks down and...
Fuel Pump Assembly 2008-2014 WRX
$369.00
OEM Subaru part. Usually ships in 2-3 days. Use this part if you need to replace the fuel filter in your 2008-2014 WRX. Fits all 2008-2014 Subaru WRX, and 2005-2009...
Fuel Pump Assembly 2015+ STI
$359.00
This is the OEM Subaru fuel pump assembly. We sell the entire pump assembly, so you don't have to worry about fussing with the pump and its fiddly retention clips....
Radium MPR Fuel Pressure Regulator
$189.95 $199.95
The Radium Multi Pump Regulator (MPR) is manufactured in the USA and is the ultimate solution for simple or complex high-flow fuel systems. Its unique port configuration make it ideal...
Subaru Fuel Line Replacement Kit 2003-2005 Forester XT
$89.00
The kit is intended to remedy an issue where the fuel system would leak fuel when ambient temperatures got very low. If you smell fuel when you start your Subaru on cold...
IAG Fuel Line Kit 2007 STI
$264.99
The IAG Performance Fuel Line kit is designed to work with the IAG Top Feed Fuel Rails and OEM FPR (Fuel Pressure Regulator). The kit includes black braided fuel lines,...
IAG V3 Top Feed Fuel Rail Kit 2007 STI
$199.49
The IAG Performance V3 Top Feed Billet Aluminum Fuel Rails with phenolic spacers are designed to increase the power ceiling on your Subaru's fuel system. The factory fuel rails function...
IAG V3 Top Feed Fuel Rail Kit 2008-2014 WRX/2008+ STI
$199.49
The IAG Performance V3 Top Feed Billet Aluminum Fuel Rails with phenolic spacers are designed to increase the power ceiling on your Subaru's fuel system. The factory fuel rails function...
Nostrum High Pressure Fuel Pump Upgrade 2015+ WRX
$888.00 $988.00
Nostrum's High-Pressure Fuel Pump is an essential component of any high-horsepower build for the 2015+ WRX. You can't make power without enough fuel, and this guy delivers. This is essential...
Subaru OEM Side Feed Injector 2004-2006 STI
$158.12
Subaru OEM injectors use factory cores, so they have the latency and impedence characteristics of stock injectors. Note that 2005-06 Legacy GT uses the same side-feed injectors as 04-06 STi....
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