SKU: EARAT981646ERL
UPC: 090127682456
MPN: AT981646ERL
The EARLS 4AN to 3/8 NPT Adapter Fitting (AT981646ERL) is a straight male-to-male adapter that bridges two of the most common industrial and high-performance fluid line standards. This black anodized aluminum fitting transitions a 4 AN (JIC) male connection to a 3/8-inch NPT male port, making it essential for custom hydraulic systems, fuel distribution networks, and pneumatic applications where standard coupling sizes don't align directly.
Aluminum construction keeps weight minimal at 0.04 lbs while maintaining structural integrity under pressure. The black anodized finish provides corrosion resistance in both dry environments and moderate exposure conditions, protecting against oxidation and surface degradation over time. The straight design eliminates flow turbulence that can occur with 90-degree or 45-degree adapters, preserving system efficiency and reducing pressure drop across the connection point. AN-to-NPT conversions are common where vintage, imported, or legacy equipment must integrate with modern SAE or pipe-threaded components.
This adapter serves motorsports builders, hydraulic shops, marine system installers, and industrial fabricators who need reliable AN-to-NPT fittings for fuel systems, brake lines, cooling loops, and pneumatic controls. The 4 AN to 3/8 NPT size combination appears frequently in engine bay plumbing where space constraints demand compact transitions. Quality sourcing of adapter fittings prevents leaks, system contamination, and unexpected downtime—factors that justify investing in a recognized manufacturer like EARLS rather than unverified generic alternatives.
EARLS has established a strong reputation in the performance automotive and fluid systems market for precision-machined fittings and adapters. When selecting an AN adapter fitting, thread compatibility, pressure rating, and material quality are non-negotiable—this product delivers on all three. Stock this adapter in your shop if you routinely perform system conversions or custom line fabrication.
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