Cobb 08-21 Subaru STI Fuel Pressure Regulator (for Fuel Rail Kit)

Maintain precise fuel pressure with the COBB Tuning Fuel Pressure Regulator, engineered specifically for use with the COBB Fuel Rail Kit on 2008–2021 Subaru STI models. Designed for high-performance applications, this regulator delivers consistent fuel pressure across a wide range of operating conditions, making it an essential component for modified engines running larger injectors, upgraded fuel pumps, or ethanol-based fuels. Whether you're building a street car or a dedicated track machine, maintaining stable fuel pressure is critical for reliable performance and accurate tuning. The COBB Fuel Pressure Regulator integrates seamlessly with the COBB Fuel Rail Kit, providing tuners with the confidence that fuel pressure remains consistent under load. Constructed from premium materials for long-lasting durability, this regulator is built to handle the demands of high-horsepower Subaru builds while maintaining OEM-quality reliability.