IAG PTFE Fuel System Kit — 1050cc Injectors / Aeromotive FPR / Red Fuel Rails — 2008-2021 STI
Complete Fuel System in One Package
The IAG PTFE Fuel System Kit with 1050cc injectors and Red IAG Top Feed Fuel Rails is a complete fuel delivery upgrade for 2008-2021 STI applications. The kit combines IAG PTFE fuel lines, Red IAG Top Feed Fuel Rails, an Aeromotive FPR, IAG fuel pressure gauge, and 90-degree gauge adapter. All lines are pre-assembled to application-specific lengths — no cutting or hose assembly required. Compatible with E85 and all modern fuel types.
DETAILS
- Includes: IAG 1050cc fuel injectors
- Includes: IAG PTFE fuel line kit (pre-assembled to application-specific lengths)
- Includes: Aeromotive fuel pressure regulator
- Includes: IAG fuel pressure gauge
- Includes: IAG 90-degree gauge adapter
- Includes: IAG Top Feed Fuel Rails in Red finish
- PTFE hose: Fragola 6000 series, stainless reinforced, black nylon cover
- Compatible with E85 and all modern fuel types
- No cutting or hose assembly required
- Aftermarket TGV housings required for installation
- Bracket for mounting Aeromotive FPR on driver-side strut tower included
- Fits: 2008-2021 Subaru WRX STI
PTFE Fuel Lines
IAG’s PTFE fuel lines use Fragola 6000 series PTFE hose with stainless steel reinforcement and a black nylon outer covering to prevent scratching. The lines are pre-assembled to application-specific lengths for a direct installation — no cutting or fitting assembly required. Working pressure is 2000 psi (burst 8000 psi). PTFE does not allow permeation of fuel vapors, which eliminates the fuel smell that other hose types can exhibit. The hose is compatible with all automotive fuel types including E85.
Complete Package Benefits
IAG’s fuel system kits are engineered with every component selected to work together. This eliminates sourcing individual parts from multiple suppliers and avoids compatibility issues between injectors, rails, FPR, and fuel lines.
Injector Sizing Guide
The 1050cc injectors in this kit are appropriate for specific power levels — 1050cc for builds up to approximately 500-600 WHP, 1300cc for 600-750 WHP, 1700cc for 750-900+ WHP on E85 or race fuel. Consult your tuner for the correct injector sizing for your specific build and fuel type.
Why Choose IAG Performance
IAG Performance has been building Subaru-specific engine and drivetrain components since 2001, and in that time they have become the standard by which serious Subaru builds are measured. Based in Westminster, Maryland, IAG designs, machines, and assembles their products in-house using Haas CNC equipment and their own engineering team. Their catalog spans everything from short blocks and long blocks rated to 1150 BHP all the way down to the fuel system, oiling, and drivetrain hardware that keeps modified Subarus running reliably for years. Every IAG product exists because a problem needed a better solution than what was available — and the engineering shows.
The RallySport Take
The IAG fuel system kit with 1050cc injectors is the efficient way to build out a complete high-flow fuel system on an 08-21 STI. Every component is pre-selected and pre-matched for a direct installation.
Fitment
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2008-2021 | Subaru | WRX STI | All |
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