That's right, another advancement in performance for the Subaru STI 2.5L from Agency Power. AP has once again engineered a product dominate of the competition. The STI fuel rail kit gives the Boxer engine equal fuel delivery unlike the stock setup. This kit will solve all your fuel distribution problems that the stock STI has when trying to obtain more horsepower. The CNC machined 6061 aluminum rails fit side feed injectors and utilizes a distribution block designed for maximum flow to all 4 cylinders. In addition, the Agency Power fuel rail is the only kit on the market with safe, non leaking, and secure AN fittings connecting the lines to the rails. These fittings will never leak and no costs are cut to ensure safety. The teflon steel braided lines are coated with a smoked, blue, or red covering for long life, prevent wear from rubbing, and flexibility.

Each Agency Power STI Fuel Rail Kit includes 2 anodized and laser engraved CNC machined rails, a distribution block to utilize your factory or aftermarket fuel pressure regulator, a fitting to run an external fuel pressure gauge, and a complete line and fitting kit. The Agency Power STI Fuel Rail Kit is available in Red or Blue. Fuel rail fits all 2004 and up 2.5L STI with side feed injectors. Lines are blue, red, or smoked with black AN fittings. Please contact us with any questions.

FITMENT: 04-06 STi (07 STi has different part#, click here)
PART#: AP-GDBC-120