The HKS stainless-steel exhaust manifold is offered for STI applications and is built to replace the factory manifold with a durable stainless construction. As an HKS component, it’s presented as a high-quality replacement or upgrade piece for Subaru STI engines where a stainless steel manifold is desired. Use with compatible exhaust systems and follow vehicle-specific fitment guidance for installation.
HKS STI Stainless Steel Exhaust Manifold