Dual Feed Holley Fuel Line

The Dual Feed Holley Fuel Line by SPECTRE is engineered for carburetor-equipped performance vehicles requiring reliable dual-outlet fuel distribution and system monitoring. Designed specifically for Holley carburetors, this braided stainless steel fuel line assembly accommodates single-tank or dual-tank fuel system configurations while integrating a pressure gauge port to monitor real-time fuel delivery. Whether you're tuning a classic street rod, vintage muscle car, or precision competition engine, maintaining accurate fuel pressure is critical to consistent jetting, atomization, and peak performance—this kit eliminates guesswork by providing direct access to pressure diagnostics.

This dual-feed assembly features a 3/8-inch NPT female inlet connection paired with dual 5/8-18-inch outlets, allowing independent fuel feeds or parallel distribution to single or multiple carburetors. The braided stainless steel construction resists abrasion, heat cycling, and fuel degradation far better than rubber or single-wall tubing, ensuring longevity in high-vibration engine bays and under sustained boost or high-RPM operation. The integrated pressure gauge port enables installation of an aftermarket fuel pressure gauge—essential for verifying fuel delivery within manufacturer specifications (typically 4–7 PSI for Holley carburetors) and diagnosing fuel pump performance, regulator calibration, or line restriction issues without breaking the main circuit.

Carburetor enthusiasts, engine builders, and restoration shops rely on this fuel line for quick, professional-grade fuel system setup. The color-coded braiding (blue, red, and silver) aids system identification and documentation during complex builds involving multi-stage fuel delivery or auxiliary systems. Installation requires standard NPT thread sealant and basic hose-clamp tools; the 5/8-18 outlets accept common fuel hose barbs with minimal modifications. Ideal for Holley 4-barrel, 2-barrel, or dual-carb configurations, this assembly is a foundational component in any carbureted engine upgrade or rebuild where fuel pressure accuracy and system redundancy directly impact drivability, fuel economy, and reliability.