SKU: RHP8163-06-58-5
UPC: 848487022883
MPN: 8163-06-58-5
The REDHORSE PERFORMANCE 6AN Male to 5/8-18 O-Ring Aluminum Clear adapter is a precision hose fitting designed for high-performance fuel, oil, and coolant systems in custom automotive builds. This adapter bridges the gap between modern AN (Army-Navy) thread standards and legacy SAE port configurations, making it essential for engine swaps, fuel system upgrades, and turbo installations where mixed fitting standards are unavoidable.
Constructed from lightweight aluminum with a clear anodized finish, the 6AN Male to 5/8-18 O-Ring fitting features an O-ring seal system that eliminates the need for thread sealant tape on the SAE side. The 6AN male port accepts standard braided hose with a -6 JIC or AN compression end, while the 5/8-18 O-ring port threads directly into cast aluminum or iron engine blocks and aftermarket manifolds. The clear finish allows visual inspection of the fitting for corrosion or contamination.
This adapter is ideal for EFI fuel system retrofits, LS engine swaps into vintage chassis, and turbo coolant line transitions where OEM ports don't align with modern hose standards. Mechanics and fabricators consistently rely on REDHORSE fittings for reliability under boost and sustained track conditions, making this adapter a valuable addition to any performance enthusiast's toolkit.
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