8AN Holley Ultra XP Carb Dual Feed Fuel Line Kit

The 8AN Holley Ultra XP Carb Dual Feed Fuel Line Kit is purpose-built for carbureted performance engines that demand reliable, dual-feed fuel delivery from tank to carburetor. This REDHORSE PERFORMANCE kit addresses a critical challenge for hot rodders, classic car restorers, and engine builders: maintaining consistent fuel pressure and flow to high-performance Holley Ultra XP carburetors under demanding driving conditions. Whether you're upgrading a street rod, rebuilding a vintage muscle car, or tuning a competition engine, proper fuel line sizing and routing directly impact throttle response, fuel atomization, and overall drivability.

An 8AN fuel line diameter is the industry standard for dual-feed carb systems, providing optimal flow capacity while minimizing pressure loss across the fuel system. REDHORSE Performance-grade hose and fittings are constructed from premium materials engineered to withstand sustained pressure cycles, temperature fluctuations, and the corrosive effects of ethanol-blended fuels. The dual-feed configuration allows separate supply and return circuits, critical for modern fuel pumps and carburetors that require return-line regulation to prevent vapor lock and maintain stable idle characteristics. Precision-engineered fittings ensure leak-free connections and resist vibration-induced loosening, eliminating the fuel odors and safety hazards of traditional rubber hose deterioration.

This kit benefits carburetor enthusiasts running Holley Ultra XP models on fuel-injected or carb-conversion builds where inline fuel regulation and dual-feed plumbing are non-negotiable. Installation works best on engines with modern fuel pumps (mechanical or electric) and properly sized fuel tanks with dual bung provisions. The compact package (14.2 inches long, under 1 pound) integrates easily into tight engine compartments without compromising underhood airflow or aesthetics. Verify your carburetor's inlet and return port sizes match 8AN specifications before ordering; this kit is engineered specifically for Holley Ultra XP carburetors and compatible high-flow carb platforms requiring dual-feed fuel supply.