Cobb Redline Intake Replacement Filter – 2015-2021 Subaru STI

Cobb Redline Intake Replacement Filter — 2015-2021 Subaru STI

The Cobb Redline Intake Replacement Filter — 2015-2021 Subaru STI is a drop-in high-flow filter replacement for the factory airbox filter element on the 2015-2021 Subaru WRX STI. It is compatible with the factory airbox — no intake plumbing changes required. Designed as a replacement for existing Cobb SF or Redline CF intake filter elements — use the correct filter for the specific Cobb intake installed. Requires Cobb Accessport with appropriate OTS maps for correct calibration.

DETAILS

• Platform: 2015-2021 Subaru WRX STI
• High-flow filter element — improved airflow over OEM paper filter
• Replacement for installed Cobb SF or Redline CF intake filter
• Requires Cobb Accessport with appropriate OTS maps

What’s in the Box

• High-flow filter element

Why Choose Cobb Tuning

Cobb Tuning has been developing performance software and hardware for turbocharged enthusiast vehicles since 1999. Founded in Austin, Texas, Cobb built its reputation on the Accessport and expanded into a full catalog of hardware engineered to complement it. Every OTS map is developed in-house on real vehicles, and every hardware product is validated as part of a complete system — not sourced and sold in isolation. That integrated approach is why Cobb produces consistent, reliable results across the builds we see every day.

Fitment