Uflex Complete Boss Fitting

The Uflex Complete Boss Fitting is a precision bleed fitting designed for outboard marine engines. Engineered by Uflex USA, this SAE ORB size #6 to 3/8 compression fitting delivers reliable air removal and pressure management in high-performance hydraulic steering systems. Built for the demands of saltwater and freshwater boating, the Boss Fitting combines durable construction with the exact port configurations required for outboard cylinder installations.

Specifications matter in marine hydraulics. The cylinder-side port features 9/16"-18 UNF 2A threading, while the hose-side port uses 9/16"-24 UNEF 2A threading—precision threads that prevent leakage and ensure proper sealing under operating pressure. This dual-thread configuration is essential for proper fit in outboard engine installations where mismatched ports create cavitation, air entrapment, and steering failure. The compact design (2 x 1 x 4 inches, weighing just 0.1 lbs) integrates seamlessly into tight engine compartments without adding bulk.

Serious boaters and tackle shops rely on OEM-spec hydraulic fittings to maintain steering responsiveness and prevent mid-water system failures. Whether upgrading a helm station, repairing a compromised bleeding circuit, or replacing worn hydraulic components after years on the water, the Uflex Boss Fitting restores precise steering control with factory-correct dimensions and port layout. Outboard owners recognize Uflex as the marine hydraulic standard—the same fittings original equipment manufacturers specify for new builds.