6AN to 6AN 3/8NPT Straight Male to Male

The REDHORSE PERFORMANCE 6AN to 6AN 3/8NPT Straight Male to Male adapter is a precision hydraulic fitting engineered for systems requiring seamless connection between AN-spec hose and NPT-threaded ports. This 816 Series straight adapter delivers reliable pressure-rated performance in high-flow applications where fuel, oil, or coolant lines demand secure, leak-free connections without elbows or directional offsets.

Constructed from aluminum and finished in black anodized coating, the fitting provides corrosion resistance and durability across motorsport, marine, and industrial fluid transfer environments. The 6AN male thread accepts standard -6 AN hose ends, while the 3/8-inch NPT male port accommodates NPT-threaded receiver ports without adapting sleeves. The straight configuration eliminates bends, reducing turbulence and maintaining system integrity in compact engine bays or tight plumbing layouts. Each unit weighs just 0.08 lbs, making it suitable for weight-conscious builds.

This adapter serves fuel system upgrades, transmission cooler installations, oil supply lines, and custom cooling circuits where AN-to-NPT transitions are necessary. It is commonly specified in high-performance engine builds, aftermarket fuel injection retrofits, and remote filtration systems. The black anodized finish resists oxidation in engine bay heat and humidity, making it a practical choice for both street and race applications.

REDHORSE has built reputation in the performance fluid systems market for exacting thread tolerances and consistent pressure ratings across their 816 Series lineup. Buyers sourcing NPT-to-AN adapters for restoration projects, engine swaps, or system modifications should verify NPT port specifications before ordering to ensure proper seating and thread compatibility.