CSF High-Performance Aluminum Radiator 2008-2021 Subaru WRX, 2008-2021 Subaru STI

Bundle Only

Built for Boost. Designed for Durability.

Whether you’re daily driving or chasing lap times, heat is the enemy—and the stock radiator isn’t built for long-term abuse. The CSF High Performance Aluminum Radiator is a direct-fit solution for the 2008–2021 WRX and STI, designed to increase cooling efficiency and eliminate common failure points in the factory system.

This radiator features a robust 2-row, 42mm aluminum core and TIG-welded end tanks that ditch the factory plastic. It’s real performance cooling, tested and proven, and now available in your choice of Raw Aluminum or a stealthy Black Finish.

Key Features

• 42mm Dual-Row High-Density Core
  Increases cooling capacity and thermal efficiency over stock—perfect for modified or hard-driven cars.

• TIG-Welded Aluminum End Tanks
  Full aluminum construction means no plastic tanks to crack, leak, or warp over time.

• Available in Two Finishes

  • Raw Aluminum – Classic performance look

  • Satin Black – Low-key, stealthy finish with corrosion resistance

• Drop-In Fitment
  Uses factory fan shroud, hoses, and mounting points. No cutting or modification required.

• Tested to OE Standards
  Pressure tested, vibration cycle tested, and thermal cycle tested to ensure performance and longevity.

What’s Included

• CSF Aluminum Radiator (Raw or Black Finish)

• Integrated drain plug

• Pre-installed mounting points

• Ready for OEM or aftermarket coolant systems

Fitment

• 2008–2021 Subaru WRX 

• 2008–2021 Subaru STI

• Fully compatible with OEM cooling hardware