Alum Bulkhead Union #3 Flare Black

The AEROQUIP Alum Bulkhead Union #3 Flare Black is a straight-through bulkhead fitting designed for high-reliability fluid transfer applications where male-to-male AN connections are required. This aluminum black-anodized fitting bridges hydraulic, fuel, or coolant lines through panel or bulkhead walls, providing a clean, integrated connection point without external adapters or exposed threads.

The #3 AN flare size accommodates 3/16-inch tubing, a standard dimension in motorsport, aerospace, and marine hydraulic systems. Aluminum construction with black anodized finish offers corrosion resistance while maintaining minimal weight—critical in racing and aircraft applications where system weight directly impacts performance and fuel efficiency. The straight-through design ensures unobstructed flow and eliminates pressure-loss elbows. AEROQUIP's engineering ensures consistent flare sealing and durability across temperature and pressure cycling.

This fitting serves technicians and builders working on custom fuel systems, brake line installations, coolant circuits, or hydraulic applications in performance vehicles, experimental aircraft, and offshore equipment. It is equally valuable for restoration work on classic machinery requiring AN-standard plumbing. The bulkhead configuration allows internal-to-external line routing without panel penetration damage, preserving structural integrity while maintaining a professional appearance.

AEROQUIP remains the recognized leader in aerospace and motorsport fluid fittings, with specifications trusted in certified aircraft and competition environments. This bulkhead union meets the dimensional and performance standards expected in applications where system reliability is non-negotiable.