Front Mount Intercooler Kit - Subaru 15-21 VA STI

Front Mount Intercooler Kit — Subaru VA STI 2015–21

The Process West Front Mount Intercooler Kit is the definitive cooling upgrade for the 2015–21 Subaru VA STI. Engineered to extract the full potential of the platform, it delivers the kind of consistent, reliable performance that the factory intercooler simply cannot match under real-world driving conditions.

Why the factory intercooler falls short.

The stock VA STI intercooler is adequate for standard output, but push the car harder — through a mountain run, on track, or with any meaningful tune — and heat soak becomes a real problem. Rising intake air temperatures rob the engine of power, reduce throttle response, and force the ECU to pull timing to protect itself. The result is inconsistent, diminishing performance exactly when you need it most.

Superior cooling, consistently.

The 685 x 275 x 85mm bar and plate core delivers a substantial increase in cooling surface area over the factory unit. Lower intake air temperatures mean more oxygen-dense air entering the engine, translating to more consistent power across the rev range, sharper throttle response, and a safer, more effective tune. Whether you are pushing hard on a back road or completing lap after lap on circuit, the Process West kit keeps intake temperatures in check where the factory unit cannot.

Lightweight CNC mandrel bent aluminium piping.

The kit uses CNC mandrel bent aluminium intercooler piping throughout, ensuring smooth, unrestricted airflow between the intercooler and engine. Mandrel bending maintains consistent pipe diameter through every bend, eliminating the flow restrictions that crush-bent piping creates.

True bolt-on fitment.

No cutting or permanent modification is required. All brackets, hose clamps, and necessary hardware are included for a clean, straightforward installation.

The foundation of any serious VA STI build.