Holley 12-847 Dominator Billet Bypass Return Style Fuel Press Reg 4.5-9 Psi Adj.

Holley 12-847 Dominator Billet Bypass Return-Style Fuel Pressure Regulator

Designed for hot street and race carbureted applications, this regulator delivers precise fuel pressure control where a return line to the tank is required. Its two-port configuration keeps fuel delivery stable under demanding engine loads, helping your carburetor respond quickly and consistently across RPM ranges.

• Adjustable pressure range: 4.5 to 9 psi for fine-tuned fuel delivery
• Construction: precision machined from 6061-T6 billet aluminum with a black anodized base and clear anodized top for durability and a premium look
• Return-style design: used in systems with a return line back to the fuel tank
• Pump compatibility: intended for use with electric pumps only; designed for high-pressure setups requiring a return line
• Port configuration: (1) -10 AN inlet O-ring, (1) -10 AN outlet O-ring, (1) -8 AN return O-ring
• Gauge access: 1/8" NPT gauge port for easy pressure monitoring
• Compatibility: designed for use with Holley Dominator inline fuel pumps or other high-pressure pumps needing a return line
• Includes: mounting bracket for straightforward installation
• Quality assurance: part of Holley’s billet fuel regulator family, engineered for strength, durability, and corrosion resistance

With its rugged billet construction, distinct finish, and flexible fuel-pressure control, the Holley 12-847 delivers reliable performance for tuned carbureted setups that demand precise pressure management and a return-path back to the tank.