#4 Male Y-Fitting

The #4 Male Y-Fitting from FRAGOLA is an essential fuel system and hydraulic line junction component designed for custom automotive builds where multiple feed or return lines must converge at a single distribution point. Whether you're upgrading fuel delivery on a high-performance engine, installing a dual-feed fuel system, or routing brake and clutch lines in a race car or restomod, this precision-engineered Y-fitting provides a clean, reliable junction that withstands the demands of modified powerplants. Mechanics and fabricators choose FRAGOLA fittings for their reputation in professional racing and street performance circles where system integrity is non-negotiable.

The #4 Male Y-Fitting features a three-port aluminum or billet construction that accepts three separate hose runs, allowing symmetrical flow distribution or combination from two lines into one—ideal for fuel surge tanks, turbo oil supply setups, and custom cooling circuits. FRAGOLA's proprietary manufacturing process ensures tight tolerances and consistent thread engagement, eliminating leaks that plague cheaper alternatives under high vibration and thermal cycling. The male port design means you'll connect standard female hose ends or fittings, giving you flexibility in plumbing configuration across fuel pressures and fluid types common in engine swaps, nitrous systems, and forced-induction applications.

Professional fabricators, shop owners, and dedicated enthusiasts running custom fuel systems, turbo kits, or multi-circuit hydraulic setups rely on this compact fitting to reduce the footprint of under-hood plumbing while maintaining structural rigidity and flow capacity. The lightweight design (0.05 lbs) makes it ideal for weight-conscious builds, and its small profile (3.85" x 0.55" x 7.35") fits tight engine bays where space is limited. Installation is straightforward with standard hose end crimpers and fittings compatible with AN lines, braided hose, and common aftermarket fuel system components—verify thread size and port count match your specific application before ordering.