Model 4500 Fuel Line

The Holley Model 4500 Fuel Line is a purpose-built carburetor fuel distribution manifold engineered specifically for Holley 4500 carburetors. This chrome-plated steel assembly manages fuel flow from a single 3/8-inch NPT female inlet to dual 5/8-18 inch inverted flare male outlets, providing the precise fuel delivery architecture that high-performance carbureted engines demand. The 4500 series represents Holley's professional-grade carburetor platform, and this fuel line is designed as an OEM component or direct replacement for builders working with this specific carb family.

The dual outlet configuration allows fuel to be distributed evenly across both primary and secondary circuits, a critical design requirement for carburetor operation under varying load conditions. The 5/8-18 inch inverted flare fittings are the industry standard for high-flow fuel systems and ensure leak-free connections at high pressures. Chrome plating provides corrosion resistance while maintaining a finished appearance that integrates seamlessly into show-quality engine bays. The 3/8-inch NPT inlet thread is compatible with standard fuel line adapters and carb fuel bowl fittings used across domestic performance applications.

This manifold suits builders and restorers working with Holley 4500 carburetors on street engines, race applications, and vintage restorations where original or OEM-equivalent fuel system architecture is required. Engine builders installing a Holley 4500 carburetor will need a fuel distribution manifold that matches the inlet and outlet specifications—this part eliminates guesswork and compatibility concerns. The compact design weighs only 0.57 pounds and fits within standard engine bay layouts, making it practical for both restoration accuracy and modern performance builds.