HKS - Cold Air Intake Full Kit for 15-21 Subaru WRX STI (EJ257) - 70026-AF004

The HKS 70026-AF004 Cold Air Intake Full Kit is a precision-engineered upgrade for the 2015–2021 Subaru WRX STI VAB equipped with the EJ257 engine. Designed to enhance airflow and boost engine performance, this intake system delivers improved throttle response, increased horsepower, and smoother acceleration.

Built from durable, high-quality materials, the HKS intake system resists heat soak and ensures consistent performance under demanding driving conditions. Its design maximizes air volume and flow efficiency while maintaining excellent filtration for reliable, long-term use. The result is improved combustion, sharper throttle feedback, and a more responsive driving experience.

Installation is straightforward thanks to the kit’s direct-fit design and included hardware. While not CARB approved, it is ideal for off-road or track applications where emissions compliance is not required. As a trusted name in performance engineering, HKS ensures that this intake system meets the high standards demanded by Subaru enthusiasts worldwide.

Features:

• Designed specifically for Subaru WRX STI VAB with EJ257 engine (2015–2021)

• Complete intake kit includes filter, piping, and installation hardware

• Improves airflow for increased horsepower and throttle response

• High-quality materials ensure durability and heat resistance

• Direct-fit design for easy installation and precise alignment

• Delivers enhanced engine sound and performance feel

• Not CARB approved; for off-road or track use only