AN/NPT Fittings & Components

AN, NPT & ORB Fittings, Hose Ends & Plumbing Components

A performance build is only as reliable as its plumbing. Whether you're routing fuel, oil, coolant, power steering fluid, or brake lines, the fittings and hose ends you choose determine whether your system holds pressure under heat and vibration — or doesn't. This collection covers the full spectrum of AN, NPT, and ORB fittings, hose ends, tube sleeves, O-rings, and supporting components for professional-grade fluid system builds.

AN Fittings & Hose Ends

AN (Army-Navy) fittings are the standard for high-performance fluid systems across racing, street performance, and custom builds. Their 37-degree flare seating surface provides a leak-free metal-to-metal seal that holds up under high pressure, high temperature, and continuous vibration — conditions that destroy compression fittings and barbed connections over time.

We stock AN fittings and hose ends in the full size range from -3AN through -20AN, covering straight, 45-degree, 90-degree, and swivel configurations in both male and female versions. Whether you're building a fuel system, an oil cooler circuit, or a custom brake line, the right AN fitting is in this collection.

NPT Fittings & Adapters

NPT (National Pipe Taper) fittings are the standard for threaded pipe connections in automotive applications — used extensively in oil pans, intake manifolds, fuel pressure regulators, and block fittings. Our NPT selection covers male and female configurations with AN and ORB adapters to bridge between thread standards cleanly and without improvised solutions.

For builders integrating AN plumbing into factory or aftermarket components with NPT ports, these adapters are the correct, leak-free solution. No thread tape, no sealant compounds on AN seats — just proper hardware installed correctly.

ORB Fittings & O-Ring Boss Connections

ORB (O-Ring Boss) fittings provide a positive seal via a captured O-ring rather than thread engagement, making them the preferred connection type for high-pressure hydraulic and fuel system applications. We carry male and female ORB fittings in -6, -8, -10, -12, -16, and -20 sizes, along with ORB-to-AN adapters for integrating with braided line systems.

Hose, Sleeves & Supporting Components

Beyond fittings, this collection includes AN tube sleeves for hard line terminations, replacement O-rings for AN and ORB connections, fuel hose for carbureted and EFI applications, and AN hose testers for pressure-checking completed assemblies before installation. Getting the supporting components right is what separates a professional plumbing job from one that leaks on the first startup.

Applications

AN and NPT plumbing components are used across virtually every performance build category — fuel systems for carbureted and EFI engines, dry sump and wet sump oil systems, remote oil cooler and filter circuits, power steering conversions, intercooler plumbing, and custom brake line fabrication. If fluid moves through it, the right fitting is in this collection.

Why Ozkonic Kustomz

We stock quality AN, NPT, and ORB components because your fluid systems don't get a second chance. Accurate sizing, correct thread standards, and hardware that seals the first time. Browse the full collection below and build your system right.

Shop the full AN/NPT fittings lineup below. Need help sizing or selecting the right fitting for your application? We're here.