Aeroflow Performance Fittings and Hose: The Complete AN Plumbing Guide for Your Build

Ask any experienced engine builder about the one area where amateur builds most commonly go wrong, and they'll often point to the plumbing - incorrectly sized fittings, wrong hose materials, leaking connections, and poorly routed lines. Aeroflow Performance, Australia's own AN fittings and hose manufacturer, has been solving this problem since their founding in Sydney. BYE Performance stocks a comprehensive range of Aeroflow products for every performance build application.

About Aeroflow Performance: An Australian Success Story

Aeroflow Performance is a family-owned company headquartered in Huntingwood, Sydney - proudly Australian through and through. Starting from a passion for cars and performance, Aeroflow has grown into a globally recognised brand with an exhaustive range covering fittings, hose, fuel systems, air filters, turbocharger components, intercoolers, radiators, catch cans, fuel rails, intake manifolds, brake fittings, and workshop tools. Their products are designed and tested in Australia, trusted by builders and racers from drag racing to marine applications.

Understanding AN Sizing: A Quick Guide

AN (Army-Navy) sizing describes the outside diameter of the fitting in sixteenths of an inch. The most common AN sizes in automotive performance are:

-4 AN (0.25" / 6.4mm ID) - Brake lines, small oil feeds

-6 AN (0.375" / 9.5mm ID) - Remote oil filter lines, small fuel lines

-8 AN (0.5" / 12.7mm ID) - Fuel delivery, oil cooler lines

-10 AN (0.625" / 15.9mm ID) - Main fuel feed on high-power builds

-12 AN (0.75" / 19mm ID) - High-flow applications, return lines, large oil systems

Choosing the wrong AN size creates either a restriction (too small) or unnecessary bulk (too large).

The Aeroflow Hose Range

Aeroflow produces hoses in multiple configurations for different applications:

Braided Rubber Hose (100/150 Series) - The most versatile performance hose. Suitable for fuel, oil, water, coolant, and power steering. Easy to cut and assemble with Aeroflow's taper-style hose ends.

Braided PTFE Hose (200 Series) - PTFE (polytetrafluoroethylene) inner lining is compatible with virtually every automotive fluid. Required for use with ethanol and methanol fuels, and recommended for brake lines.

Push Lock Hose - Quick-connect design for less critical applications. No separate hose ends required.

Kryptalon Kevlar Braided Hose - Aeroflow's premium hose, using Kevlar reinforcement for maximum pressure handling in extreme applications.

Silicone Hose - For coolant and intercooler piping where flexibility and heat resistance are the priority.

Aeroflow Fittings: Quality You Can See and Feel

Aeroflow fittings are machined from aircraft-grade aluminium and finished with double anodising for colour consistency and corrosion resistance. Double Viton O-ring seals provide leak-free performance with a wide range of fluids. Their comprehensive adapter range covers AN-to-NPT, AN-to-ORB, AN-to-metric, and virtually every other thread combination you'll encounter building a performance car in Australia.

Aeroflow for Fuel Systems, Oil Systems, and More

Aeroflow's product range extends well beyond basic fittings - they supply complete fuel system components (fuel rails, regulators, catch cans), turbocharger oil feed and drain fittings, remote oil filter relocators, and brake fitting components. For a full engine build or LS swap, Aeroflow provides everything you need to plumb the car correctly.

Aeroflow Products at BYE Performance

We stock a comprehensive range of Aeroflow fittings and hose - from common -6AN and -8AN fuel fittings to specialised brake and oil system components. Our team can advise on correct AN sizing and specification for your application. Visit shop.byeperformance.com.au or call 08 9451 9696 to order or get expert advice.