The COBB cold air intake included in the 2018 Subaru WRX STI Stage 1+ Power Package (black) is a tuned intake designed to replace restrictive factory plumbing and support COBB Stage 1+ calibration for WRX STI applications. Packaged as part of the Stage 1+ kit, it aims to simplify installation and ensure component compatibility within the matched power upgrade.
Cobb 2018 Subaru WRX STI Stage 1+ Power Package - Black