#10 Male to 3/8in NPT Ano-Tuff Adapter

The EARLS #10 Male to 3/8in NPT Ano-Tuff Adapter is a precision hose fitting designed for high-performance automotive cooling and fuel systems. This adapter bridges AN (Army-Navy) and NPT (National Pipe Taper) port configurations, making it essential for custom engine builds and aftermarket installations where mixed thread standards are unavoidable.

Manufactured by EARLS, a trusted name in performance fluid systems, this adapter features aluminum construction with Ano-Tuff anodizing that resists corrosion, oxidation, and thermal stress in underhood environments. The #10 AN male end, equivalent to -10 AN, connects to standard -10 hose and fittings, while the 3/8-inch NPT female port accommodates factory or aftermarket block ports and water passages.

This fitting is ideal for engine builders, fabricators, and enthusiasts tackling LS swaps, 5.0 Coyote installations, or vintage engine conversions where donor and recipient cooling systems use incompatible port threads. Its compact dimensions and minimal weight make it a practical choice for various automotive applications.