AEM Cold Air Intake System for 2015-2021 VA Subaru STi (21-863C) BorgWarner or for our AMS fuel

or for our AMS fuel rails once they become available

The ring gear is NOT included and one will need to be assembled onto the flywheel

bumper shroud and plastic clip delete air intake

9-blade FP54 turbine wheel paired with a 73 HTZ compressor wheel to make a quicker spooling Green that still flows 57LB per minute

This black plastic cover is the large undertray under the engine compartment

AEM Cold Air Intake System for 2015-2021 VA Subaru STi (21-863C) BorgWarner or for our AMS fuelAEM cold air intake systems are engineered to boost horsepower and torque, featuring an oversized AEM DRYFLOW synthetic washable air filter for superior airflow, filtration, and performance. Custom engineered tubes deliver better airflow than you get with a stock intake. More air means better performance. The system includes a mandrel bent aluminum intake tube, high quality hardware, and a custom heat shield to protect intake air from engine bay heat.