Product Details
- Holley Adjustable Fuel Pressure Regulator provides accurate, tunable fuel pressure management for both carbureted setups and EFI performance systems
- CNC-machined from 6061-T6 billet aluminum, featuring a black anodized body and clear anodized cap for long-lasting durability and a refined look
- Pressure adjustment range of 4–65 psi, supplied with a carburetor spring installed and an additional spring included to accommodate EFI applications
- Configured for return-style fuel systems and available with either pipe thread ports or AN O-ring fittings for installation flexibility
- Incorporates a manifold reference port and a dedicated gauge port to streamline adjustment and pressure monitoring
- Offers 1:1 boost reference functionality and is compatible with diesel fuel and E85 blends
- Protected by a 90-Day Warranty
Achieving consistent fuel delivery is critical when building a dependable street car or a competition focused machine. Whether you are refining a carbureted combination or preparing for a future switch to electronic fuel injection, accurate fuel pressure management helps protect performance and reliability. The Holley Adjustable Fuel Pressure Regulator provides the control and adaptability needed for a wide range of builds.
Constructed from precision machined 6061-T6 billet aluminum, this regulator is built for strength and lasting service. It features a black anodized base paired with a clear anodized cap for a sharp, performance oriented appearance. Pressure is adjustable from 4 to 65 psi, with a carburetor calibrated spring installed and an additional spring included to expand adjustment for EFI applications. Designed for return style fuel systems, it is available with traditional pipe thread ports or AN O-ring style fittings to integrate with existing or custom fuel plumbing. A built-in manifold reference port and dedicated gauge port simplify setup, while 1:1 boost reference capability supports forced induction combinations. It is also compatible with gasoline, diesel, and E85 fuels.
Engineered to accommodate both current carbureted systems and future EFI upgrades, this adjustable regulator offers the flexibility performance enthusiasts demand. It helps maintain stable fuel pressure across changing loads and driving conditions for consistent operation. Backed by a 90-Day Warranty.