Performance AN Fittings

Running a high-horsepower setup means keeping your fluid lines completely secure under heavy pressure, heat, and vibration. Whether you’re plumbing a fresh fuel system, hooking up an oil cooler, or setting up power steering lines, high-quality hose end fittings ensure your vehicle delivers maximum flow without dangerous leaks. At VPW, we stock an extensive range of AN fittings and performance hose fittings engineered to handle aggressive fuels, extreme temperatures, and high-pressure demands. Explore our selection of high-performance AN fittings to give your build the ultimate plumbing reliability.

Finding the Right Hose Ends for Your Build

When choosing your line setup, you need to consider factors like fuel type, operating pressure, and engine bay routing. If you want clean routing around tight crossmembers, swivel hose end fittings allow 360-degree rotation after assembly, allowing you to tighten connections without twisting the hose. For E85, race fuel, or fuel lines routed inside the passenger compartment, upgrading to PTFE hose end fittings is a smart choice. The chemical-resistant Teflon core stops harsh fuel breakdown while keeping fumes out of your cabin.

Getting your line sizing right is just as important for steady fluid velocity. We carry everything from compact 6AN fittings for fuel rails up to heavy-duty -6AN, -8AN, -10AN, -16AN hose fittings for high-flow cooling, oiling, and main fuel feeds. If you're amping up stopping power, our dedicated brake hose end fittings deliver firm pedal feel under hard braking, while our heavy-duty hydraulic hose end fittings offer maximum strength for industrial and high-pressure applications. From off-the-shelf standard sizes to custom AN fittings, we have the exact AN hose ends your project needs.

Build a Complete Fluid Delivery System with VPW

As your one-stop shop for performance car parts, you can easily adapt your lines to factory engine blocks, carburetors, or aftermarket rails by pairing your setup with our massive range of fittings & adaptors.

For high-temp setups, run your lines directly to our oil coolers to maintain stable fluid pressure. We also carry specialised water pump fittings to tidy up cooling bypasses, plus precision flow control valves for accurate fuel regulation.

Shop Hose End Fittings at VPW

Don't let a leaky fitting ruin your engine build or take up precious track time. Shop our full collection of hose end fittings online or in-store today!

Frequently Asked Questions

What is an AN fitting and how is it different from a standard hose fitting?

An AN (Army/Navy) fitting is a high-pressure fluid connector built around a 37-degree angled metal flare. While standard hose lines use worm-drive clamps over barbs or Teflon tape on pipe threads, AN fittings pull matching metal faces together to form a reusable, leak-proof seal that won't back off under extreme heat or vibration.

What AN size do I need for my fuel, oil, or brake line?

The AN size you need is dependent on your system's fluid volume and operating pressure. Compact -3AN and -4AN sizes are used for high-pressure brake hose end fittings and gauge lines. Mid-range 6AN fittings are standard for fuel rails, while larger -8AN, -10AN, -16AN hose fittings are required for main oil cooler lines, high-horsepower fuel feeds, and primary radiator plumbing.

How do I fit a hose end fitting onto braided line?

To fit a hose end fitting onto a braided line, you’ll need to wrap masking tape around the hose cut location to prevent fraying, then trim it square with a fine-tooth blade. Slide the socket nut over the hose, apply assembly lube to the threads and inner liner, push the fitting nipple firmly into the hose core, and tighten the socket nut with an aluminium spanner until a 1mm gap remains.

What's the difference between PTFE and rubber braided hose ends?

The main difference between PTFE and rubber braided hose ends comes down to chemical resistance and vapour permeability. PTFE hose end fittings feature a Teflon liner that is completely immune to E85, race fuels, and cabin fuel vapours, while rubber braided hose ends provide superior flexibility for general engine bay oil and coolant lines where cabin vapour containment is not required.

Are AN fittings interchangeable with NPT or metric fittings?

AN fittings are not interchangeable with NPT or metric fittings because they use different thread pitches, angles, and sealing methods. For example, AN connections seal on a 37-degree flared seat without sealant, whereas NPT threads are tapered and require thread tape or paste, and metric fittings seal using crush washers or O-rings.

How do I change or replace a hose end fitting?

To replace a hose end fitting, unthread the outer socket nut from the fitting body and slide it back along the line. Soften the hose end by submerging it in hot water for ten seconds, pull the fitting nipple straight out of the hose core, trim away any frayed line, and assemble your new AN hose ends using assembly lube.