AN Reducer #4 Female x #3 Male

The AN Reducer #4 Female x #3 Male is a critical adapter fitting designed for custom fuel, coolant, and hydraulic system builds where line size transitions are necessary. Built by Triple X Race Components, this straight-reducing adapter allows experienced fabricators and engine builders to step down from larger #4 AN ports to smaller #3 AN connections without leaks or flow restrictions. Whether you're plumbing a high-performance fuel system, building a custom cooling circuit, or adapting legacy components to modern standards, this reducer handles the job with precision and reliability.

Machined from aluminum and finished in black anodize, the AN Reducer features a female swivel connection on the #4 side and a fixed male thread on the #3 side, enabling 360-degree hose fitting rotation while maintaining a sealed joint. The aluminum construction keeps weight minimal (0.03 lbs) without sacrificing durability, while the straight-through design eliminates flow turbulence common in bent adapters. Black anodized finish resists corrosion and blends seamlessly into engine bays, race car compartments, and show builds alike. The compact 2.45-inch length allows placement in tight spaces typical of modern engine configurations.

This adapter is ideal for fuel system integrators working with both OEM and aftermarket components that don't share matching AN port sizes. It's equally at home in circle-track race cars, street hot rods, and performance truck builds where hose routing flexibility and system longevity matter. Installation requires standard AN wrenches and teflon tape or thread sealant; the female swivel accommodates -4 hose fittings without twisting the underlying line. For builders stepping down system pressure or flow capacity while maintaining clean plumbing, this reducer delivers professional results at a fraction of custom fabrication costs.