Carb. Inlet Fitting - 9/16-24 x 5/8-18 3/8 IF

The DEMON CARBURETION Carb. Inlet Fitting – 9/16-24 x 5/8-18 3/8 IF is an essential fuel delivery component for carburetor-equipped engines undergoing restoration, street performance, or custom build work. As a mechanic tackling carb rebuilds or manifold conversions, you'll recognize this fitting as the critical junction where fuel lines connect to the carburetor inlet, translating precision thread matching into reliable fuel flow. Whether you're sorting a vintage muscle car, a hot rod, or a race engine swap, the correct inlet fitting eliminates leaks, contamination, and fuel system complications that undermine engine performance and reliability.

This fitting features dual SAE thread ports—9/16-24 and 5/8-18—allowing seamless integration between fuel supply lines and carburetor inlets across different carb platforms and fuel system configurations. The 3/8 IF (inlet fitting) designation confirms a compact, standardized profile designed to minimize fuel line routing complexity while maintaining secure, leak-free connections under operating pressure and vibration. DEMON CARBURETION's engineering ensures proper material compatibility and thread tolerances, preventing corrosion and galling that plague inferior fittings during installation or service. The lightweight design (0.12 lbs) reflects its aluminum or ductile iron construction, common to high-performance carb hardware that balances durability with weight reduction.

Carburetor enthusiasts, engine builders, and restoration shops rely on DEMON fittings when converting carburetors between vehicles, upgrading fuel systems, or replacing corroded OEM components. This inlet fitting is indispensable for Holley, Edelbrock, QuadraJet, and Demon carb applications where fuel line adaption or manifold transition is required. Installation demands thread-sealant precision—wrap SAE port threads with PTFE tape or thread compound to guarantee leak-proof operation—and a simple wrench application secures the fitting without over-torque damage. Stock this fitting for immediate carb work, or keep it on hand for emergency fuel system repairs when original fittings fail.