Machined from billet 6061 aluminum and finished in anodized silver, this TGV housing kit replaces the factory runner box on your Subaru WRX STi turbo engine to dramatically improve airflow to the cylinder heads while retaining full bolt-on installation, gasket and hardware included. Ideal for high-flow builds and elevated performance regimes, it’s precision CNC-machined for accuracy, built to order in small batches, and backed by PLM’s high-quality standards and one-year warranty for enthusiast confidence.