IAG V3 Top Feed Fuel Rails

2015-2021 Subaru STI

Ships for free in the 48 states


In Stock

The Top Feed Fuel Rails will come in the red finish to increase the fuel volume in the Subaru STI. 


IAG V3 Top Feed Fuel Rails Red


  • CNC machined from billet aluminum materials
  • Designed in parallel format
  • Features a port to add an optional fuel pressure damper between each pair of injectors
  • 5/8" bore I.D. designed to accept -8 O-ring boss fittings
  • 2-piece mounting design for phenolic thermal spacers
  • Recessed mounting hardware
  • Integrated port for the fuel damper between injectors
  • Engraved with IAG logo
  • Red finish



  • (2) Billet fuel rails
  • (4) Zinc coated M8x30mm socket head cap bolt
  • (4) Phenolic short spacers
  • (4) Phenolic long spacers
  • (4) O-rings
  • (2) Hex head threaded plugs



The IAG Performance Top Feed Fuel Rails have been designed to allow users to complete a top-feed fuel conversion. These rails feature a smooth interior bore that allows for an increase in overall fuel volume to your injectors, which is required when making more boost and more horsepower. 

These fuel rails will run in parallel format to allow for even distribution in fuel and will include all of the required mounting hardware. Just supply your preferred injectors and you will be ready to supplement your engine to increase the overall power limits of your Subaru. 

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