Cobb 08-21 Subaru STI Fuel Rails

Upgrade your fuel delivery system with the COBB Tuning Fuel Rails for the 2008–2021 Subaru STI. Engineered to provide consistent fuel distribution across all cylinders, these high-flow fuel rails are an essential upgrade for high-horsepower builds, larger fuel injectors, and ethanol-compatible fuel systems. Manufactured from precision-machined billet aluminum, the COBB Fuel Rails offer increased flow capacity over the factory rails while maintaining excellent durability and corrosion resistance. Their direct-fit design integrates seamlessly with the factory fuel system or other compatible performance fuel components, making installation straightforward for enthusiasts and professional builders alike. Whether you're upgrading your turbocharger, converting to E85, or building a reliable track-ready STI, COBB Fuel Rails provide the fuel delivery needed to support your performance goals.