PTFE Hose Assemblies

Need a hose that is ready to install without having to assemble the fittings yourself? These PTFE hoses come with pre-installed female AN fittings on both ends, so all you need to choose is size, length and angle. They are for you if you are building or upgrading fluid lines in a project.

What defines a ready-made PTFE hose assembly?

A hose assembly consists of a PTFE hose with fittings already installed on both ends. This saves you from cutting the hose and assembling the fittings yourself, where an incorrect assembly can cause leaks. The PTFE inner liner is typically resistant to fuel and oil and can withstand high temperatures, but pressure and temperature limits depend on the specific hose. If you want to compare with other solutions, take a look at our other PTFE hoses.

How to choose size, length and angle

• AN size: The assemblies are available in, for example, 6AN, 8AN and 10AN. The size must match the connections and the flow the system requires.
• Length: Lengths range, for example, from 12 to 36 inches. Measure the actual route including bends, and allow for engine movement – a hose that is too tight puts strain on the fittings, while one that is too long can rub against other parts.
• Angle: Combinations such as straight/90° or straight/45° can make it easier to route the hose close to the engine and body without sharp kinks.

Installation and maintenance

Tighten AN fittings with a suitable wrench and avoid overtightening them, as this can damage the sealing surface. Route the hose away from sharp edges and hot parts such as the exhaust manifold, or protect it where clearance is tight. Check the connections for moisture after the first drive and during regular inspections. The assemblies in this category are from Vibrant, so you can keep your fittings consistent if you also use other PTFE hoses and fittings from the same brand.

Frequently asked questions

Can I use a PTFE hose assembly for fuel?

Often yes, as PTFE typically handles fuel well, but check the specifications for the specific part number, including pressure and temperature. For ethanol-blended fuel, you should also check that the hose and fittings are listed as suitable.

How do I choose between 45° and 90° fittings?

It depends on how sharply the hose needs to turn right after the connection. A 90° end can save space at a tight connection, while 45° can give a smoother routing. In any case, keep the hose free of sharp kinks.

Can the hose be shortened if it is too long?

A ready-made hose assembly is designed to be used at the length it is supplied in. If you shorten it, you will need to install new fittings correctly yourself. So choose the length based on an accurate measurement of the route.