Metric to Barb Fitting Male M10 x 1.0 to 5/16in

The Metric to Barb Fitting Male M10 x 1.0 to 5/16in by Vibrant Performance is a precision hose adapter engineered for fuel system, coolant circuit, and vacuum line applications in modified and stock vehicles. As an automotive builder or mechanic upgrading fuel delivery systems, you'll recognize the critical role these metric-to-SAE conversion fittings play in routing custom fuel rails, intercooler piping, and engine management lines. This fitting bridges the gap between metric threaded ports common on modern engines and barbed hose terminations standard in aftermarket plumbing, eliminating the need for bulky reducer blocks or improvised solutions.

Vibrant Performance's design features a solid brass or aluminum body with an M10 x 1.0 metric male thread on one end and a 5/16-inch barb on the other, ensuring leak-free dry-break compatibility under boost and pressure cycling. The barbed design grips standard 5/16-inch fuel and coolant hose securely without requiring a compression fitting, reducing complexity and weight—a priority in turbo and supercharger installations where every connection point must resist vibration and thermal expansion. The compact 3.54-inch length allows seamless integration into tight engine bay layouts, while the minimal 0.01-pound weight contributes nothing to unsprung mass, making this ideal for performance builds where every gram counts.

Custom fuel system builders, turbocharger installers, and engine swap enthusiasts rely on these fittings when integrating late-model turbocharged or supercharged mills into vintage platforms or transitioning between OEM and aftermarket fuel rail standards. Use stainless-steel hose clamps rated for fuel service to secure the barbed end, and verify your target hose ID matches 5/16 inches to ensure a positive seal. This fitting is compatible with all fuel-grade hose rated for the pressure and temperature of your system—whether you're running a carbureted hot rod with modern fuel injection, a LS-swapped classic, or a boosted four-cylinder daily driver chasing reliability and power.