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Agency Power Fuel Rail Kit Subaru STI 08-16

$500.00

Agency Power

Model #AP-GRB-120

The biggest problem in increasing horsepower on the factory Subaru Boxxer engine is the fuel delivery. The factory system runs the fuel in series which tends to cause certain cylinders to obtain less fuel. In higher boost applications, these cylinders can lean out dangerously causing the motor to fail.

The new fuel rail system features -6 lines which is nylon coated in either red or blue. The lines feature AN fittings for a secure fit guarantying you will never have any leak issues. The new distribution block is mounted to the pitch stop mount under the top mount intercooler or front mount intercooler piping. Equal length line runs to each fuel rail to ensure proper fuel distribution for even the most powerful cars on the road. The new rail design features a 2 piece system that bolts in place of your factory unit. The rails seat securely on the injectors with the proper angle for the best and most precise spray pattern. The factory fuel pressure regular remains in the stock location and a return hose is used from the distribution block.

All 3 pieces are precision machined CNC 6061 aluminum. They have then been sand blasted and anodized in either red or blue for a smooth show finish. Each distribution block features the AP logo laser engraved. All fuel rail kits include the hardware and bracket for safe mounting.

The Agency Power Fuel Rail Kit works with all 2008-2015 Subaru STi motors only. Top feed injectors work only for this kit like the factory setup.


All Agency Power products come with a LIMITED LIFETIME warranty when you fill out this form HERE.

Proposition 65

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Vehicle Engine Notes
2008-2016
Subaru STI

Agency Power Industries LLC was developed out of the need to provide quality, functional, and fashionable racing products. Starting from sway bar endlinks for the Subaru WRX back in 2003, Agency Power now has over 300 part numbers for cars ranging from the STI, EVO, M3, 996, TC, and more. Based out of Arizona, Agency Power has established itself as one the core aftermarket companies for Subaru WRX STI and Mitsubishi EVO products. With new focus on the Porsche and BMW market, Agency Power is constantly developing new functional and race proven products. With dealers worldwide, the AP brand is recognized globally. Working with top distributers and tuners in the USA, AP can be found in Singapore, England, Canada, Australia, South Africa, and other parts in the EU.

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