Fuel Pressure Regulator

The Edelbrock Fuel Pressure Regulator (MPN 8190) is an in-line fuel management component engineered for carbureted engines and mechanical fuel systems that require precise pressure control. Designed for automotive enthusiasts and mechanics upgrading carburetor-based powerplants, this regulator maintains consistent fuel delivery across a 4.5 to 10 psi operating range—critical for maximizing carburetor performance, preventing fuel starvation at high RPM, and eliminating vapor lock during aggressive driving. Whether you're building a classic hot rod, restoring a vintage muscle car, or tuning an existing carbureted engine, fuel pressure regulation is non-negotiable for reliability and throttle response.

Constructed from durable anodized aluminum with a clear sight glass for real-time pressure monitoring, this in-line regulator features 3/8-inch NPT inlet and dual 3/8-inch NPT outlets, enabling flexible fuel line routing and branching to multiple carburetors or fuel distribution blocks. The adjustable spring mechanism compensates for fuel temperature fluctuations and engine load changes, ensuring constant fuel pressure without external electrical input. The black and clear anodized finish resists corrosion in engine bays and delivers professional appearance, while the compact 13.8-inch length and 0.65-pound weight suit tight engine compartments without adding parasitic weight.

Street rodders, classic car collectors, and high-performance carburetor tuners benefit most from this regulator's predictable pressure hold-down across idle, cruise, and wide-open throttle scenarios. Install it between the fuel pump and carburetor inlet on single-carb applications, or use the dual outlets to feed multiple four-barrels or fuel distribution manifolds on big-block builds. Compatibility spans all gasoline-fueled carbureted engines; verify 3/8-inch NPT thread pitch on your fuel lines and pump outlet before purchase. This plug-and-play component pairs seamlessly with mechanical fuel pumps, electric pumps, and gravity-fed fuel systems, making it an indispensable upgrade for any carb-equipped engine demanding stable, adjustable fuel pressure.