#6 To #4 Reducer Steel

The #6 To #4 Reducer Steel fitting from AEROQUIP is a straight adapter designed to connect fluid or pneumatic lines of different sizes in high-performance hydraulic systems. This reducer adapter allows technicians and enthusiasts to bridge a 6 AN female port to a 4 AN male port, making it essential for custom plumbing configurations in motorsports, aerospace, and industrial equipment where precise flow management and compatibility between different line gauges is critical.

Manufactured from durable steel and finished with a zinc-plated coating, this straight reducer provides reliable corrosion resistance and dependable performance in demanding environments. The zinc plating protects the steel substrate from rust and oxidation while maintaining structural integrity under pressure cycles. The straight design eliminates flow turbulence, ensuring smooth transitions between port sizes and reducing pressure drop compared to angled alternatives, which is critical in fuel systems, coolant circuits, and hydraulic lines where efficiency directly impacts system performance.

This adapter is ideal for custom hydraulic builds, race car fuel systems, aircraft maintenance, and industrial equipment retrofitting where standard adapters don't meet space or port requirements. Installation requires only a wrench or hose crimper compatible with AN fittings—no special tools needed. The compact dimensions (2.2 x 1.1 x 3.75 inches) and lightweight construction (0.09 lbs) make it suitable for weight-sensitive applications while maintaining full strength for rated pressures.