The HKS S‑type intercooler for GDB chassis with EJ207 engines is an application-specific aluminum intercooler engineered to improve charge-air cooling for those Subaru setups. It replaces the factory unit with a larger S‑type core and inlet/outlet routing matched to GDB EJ207 applications, offering clearer airflow and a tailored fit for STI models using that engine.

HKS I/C S-type AL GDB(E) EJ207