Holley 12-848 EFI Bypass Return Style Fuel Press Reg Boost Ref. 15-65 Psi Adj

Holley 12-848 EFI Bypass Return Style Fuel Pressure Regulator

Designed for hot street and race EFI applications, this two-port, boost-referenced regulator delivers precise fuel pressure control across a wide range. With a 1:1 boost reference, you can dial in exactly the pressure needed as boost changes, while keeping the system stable and predictable.

• Adjustable fuel pressure from 15 to 65 psi for precise tuning
• Two-port design with 1:1 boost reference
• Constructed from 6061-T6 billet aluminum; black bright-dip anodized base and clear bright-dip anodized top for corrosion resistance and a premium look
• Inlet: one -10 AN O-ring; Outlet: one -10 AN O-ring; Return: one -8 AN O-ring
• Gauge port: 1/8" NPT
• Designed for use with Holley Dominator inline fuel pumps or other high-pressure pumps where a return line is needed
• Used in systems with a return line back to the tank; for electric pumps only
• Mounting bracket included

Holley Billet Fuel Pressure Regulators are precision machined for strength and durability and are part of Holley’s complete line of fuel system products. The 12-848 regulator offers robust performance and a clean look, combining reliable operation with a corrosion-resistant finish to stand up to demanding hot street and race EFI environments.