#8an to #6an Steel Union Reducer Fitting

The AEROQUIP #8AN to #6AN Steel Union Reducer Fitting (FCM2758) is a straight-port adapter designed to connect AN hose lines of different sizes in high-pressure fluid systems. This zinc oxide-plated steel coupling transitions from 8 AN male ports to 6 AN male ports, making it essential for hydraulic, fuel, and coolant applications where line consolidation or stepped plumbing is required.

The straight-port configuration ensures minimal pressure drop and turbulence across the transition, critical in systems where flow velocity and system integrity are performance factors. Steel construction with zinc oxide plating provides corrosion resistance suitable for engine bay and marine environments where salt spray and thermal cycling accelerate oxidation. The male-to-male port design accommodates standard AN fittings on both sides, simplifying integration into existing line assemblies.

This reducer is commonly specified in custom fuel injection systems, turbo coolant lines, transmission cooler plumbing, and off-road vehicle hydraulic setups where designers need to match hose sizes across different system sections. Compact dimensions (2.25 x 1.1 x 3.7 inches) and lightweight construction (0.12 lbs) minimize installation footprint in tight engine compartments. The adapter is compatible with standard AN hose crimping and swaging tools, allowing technicians to build or modify systems without specialized equipment.

AEROQUIP AN fittings are industry standard in performance automotive and industrial applications, recognized for consistent tolerance and pressure ratings. This union reducer supports system pressures common to fuel injection, cooling, and brake systems, though specific maximum pressure should be verified against your system design specifications.