#10 Str Fem to 3/8in NPT Swivel Adapter

The XRP-XTREME RACING PROD. #10 Str Fem to 3/8in NPT Swivel Adapter (SKU XRP900611) is a precision AN-to-NPT thread conversion fitting designed for high-performance fuel, coolant, and fluid line applications in marine engines and racing systems. This straight adapter bridges #10 AN female swivel ports to standard 3/8-inch NPT male connections, enabling seamless integration of aftermarket fuel systems, water cooling setups, and auxiliary fluid circuits where OEM NPT infrastructure meets performance AN-line requirements.

Constructed from aluminum with blue and red anodized finish, this adapter delivers lightweight corrosion resistance critical for saltwater marine environments and high-vibration engine bays. The swivel female end accommodates hose fittings with rotational freedom, eliminating stress concentrations during installation and reducing the risk of hose fitting damage on tight-radius routing. The NPT male thread on the outlet end provides reliable face-seal engagement with 3/8-inch NPT female ports commonly found on marine manifolds, coolers, and water distribution blocks. At 0.1 lbs and compact 2.65 x 1.2 x 3.65-inch envelope, the adapter integrates cleanly into confined engine compartments typical of performance boats and offshore fishing vessels.

This fitting serves boaters upgrading fuel delivery systems, installing auxiliary water cooling, or retrofitting high-flow filtration where legacy NPT port specifications must accept modern AN-line hoses. Serious offshore anglers and race boat operators routinely specify XRP adapters to maintain OEM thread compatibility while leveraging the reliability and adjustability of braided stainless steel AN hoses. The anodized finish resists both freshwater and saltwater corrosion, making it suitable for coastal and offshore applications where standard aluminum corrodes rapidly.

AN-to-NPT adapter selection hinges on thread pitch compatibility and seal design; this model's swivel female end allows hose fitting adjustment post-installation, a practical advantage over fixed adapters when space is constrained or routing angles shift during engine tuning or cooling system modifications.