IAG Triple Pass Competition Series 55mm Radiator WRX 08-14 / STI 08-21 | IAG-ENG-2302

Product Fitment:

2008-2014 Subaru WRX

2008-2021 Subaru STI

The IAG 55mm Triple-Pass Competition Series Radiator is a high-performance cooling upgrade engineered for 2008–2014 Subaru WRX and 2008–2021 STI models (GV, GR, VA chassis). Designed for track use and high-horsepower builds, this radiator delivers significantly improved cooling efficiency and durability over stock components.

Features:

• Triple-Pass Cooling Efficiency:
  Internal baffles route coolant through the core three times, increasing cooling efficiency by 10–20% compared to OEM radiators.

• All-Aluminum Construction:
  Lightweight, high-strength aluminum provides superior heat dissipation, rapid heat transfer, and excellent corrosion resistance.

• Performance-Ready Design:
  Ideal for competition or modified engines that experience higher operating temperatures. Maintains consistent thermal control under load.

• Optimized Fitment:

  • 55mm (2.165”) core for enhanced cooling capacity

  • Compatible with OEM radiator fans and mounting points

  • Stock-position lower outlet and revised upper inlet (requires IAG Silicone Hose #IAG-ENG-2304 – included)

• Adaptable to Aftermarket Setups:

  • Includes -6 AN male fitting for expansion tank integration

  • Comes with a -6 AN female cap for applications that do not require it

• Made in the USA:
  Manufactured at IAG's facility using high-quality materials to ensure long-lasting performance in demanding conditions.

Includes:

• IAG 55mm Triple-Pass Competition Series Radiator

• IAG 4-Ply Silicone Upper Radiator Hose (#IAG-ENG-2304)

• Lower Radiator Hose

• -6 AN Cap