IAG V3 Top Feed Fuel Rails with Phenolic Spacers Subaru WRX 2002-2014 / STI 07-21 IAG

Fitment Information:

2002-2014 Subaru WRX

2007-2021 Subaru STI

2008-2012 Subaru Legacy GT

2006-2013 Subaru Forester XT

Please note:

• Aftermarket lines and fittings are required to fit IAG Fuel Rails; they can be purchased separately.
• This product is confirmed to fit with Injector Dynamics.
• Process West TGV Deletes may require 5mm shorter bolts to properly work with the IAG V3 fuel rails. The shorter hardware is not included in this kit.

Features:

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 in a series, which means that each cylinder’s fuel is delivered after the other. As horsepower rises past the 350whp mark, the stock rail often does not have the capacity to deliver fuel to the last cylinder effectively*. As a result, that last cylinder can run lean, which can result in catastrophic failure. The IAG billet fuel rails are designed to eliminate this problem.

These IAG fuel rails operate in parallel format, each cylinder bank receives equal fuel, matching the flow between the rails ensures that each injector sees the same fuel pressure. Second, the bore of our rail is machined to 5/8″ ID and is designed to accept -8 O-ring boss fittings. This configuration greatly increases the volume of the rail which means that more fuel is available at higher power levels and IAG’s fuel rails were real-world tested to 1000hp.

The IAG V3 fuel rails also feature a port to add an optional fuel pressure pulsation damper between each pair of injectors. Fuel dampers absorb fuel oscillations caused by injectors opening and closing. All Subaru’s are equipped with a fuel damper however its location is some distance from the injectors. The IAG V3 rails locate the damper between the injectors to help maintain constant pressure.

Finally, the IAG V3 fuel rails add phenolic spacers that are located between the rails and the TGV’s. The phenolic spacers aid in reducing heat transferring from the engine to the fuel entering the engine.

• CNC machined from 6061 billet aluminum
• Anodized finish in Black, Red, or Gold
• Engraved with IAG Logo
• 5/8″ inch Bore I.D. designed to accept -8 O-ring boss fittings
• 2 piece mounting design (Phenolic Thermo Spacers)
• Recessed mounting hardware
• Integrated port for fuel damper between injectors
• Engineered and manufactured at the IAG facility in Westminster, Maryland.

What’s in the Box:

• (2) Billet Fuel Rail
• (4) Zinc coated M8x30mm socket head cap bolt
• (4) Phenolic Spacers
• (4) O-rings
• (2) Hex Head Threaded Plug