Select Your Vehicle:
Browse & shop Aftermarket Fuel Pressure Regulators for your car or truck.
Fuel pressure regulators control the amount of fuel pressure delivered to the injectors, helping maintain stable and consistent fueling under varying engine loads. Upgraded fuel pressure regulators are commonly used in Subaru WRX and STI builds to support modified fuel systems, larger injectors, and performance tuning.
Compared to factory regulators, performance fuel pressure regulators allow for more precise control of fuel pressure, especially in setups with increased fuel flow or aftermarket fuel components. This helps ensure predictable fuel delivery and stable air-fuel ratios during acceleration and sustained boost.
Why Fuel Pressure Regulation Matters
Street-focused builds may continue using factory fuel pressure regulation when running mild upgrades. However, as fuel system demands increase, an upgraded regulator can help maintain consistent pressure and improve overall drivability.
Performance-oriented setups often rely on adjustable fuel pressure regulators to fine-tune fueling characteristics. These regulators are commonly paired with upgraded fuel pumps, larger fuel injectors, and performance fuel rails to support higher horsepower and ethanol-based applications.
Proper fuel pressure regulation plays a critical role in ensuring fuel system balance, tuning accuracy, and long-term engine reliability.
Don't See Parts for your Vehicle?
We'll find it for you within 24 hours! Click the parts locator below: