6AN PTFE Fuel Hose Line 25ft 5/16 in ID - High Temp Pressure Ready

In this review the EVIL ENERGY 6AN PTFE fuel hose is examined for performance and fitment in workshop and race applications; the bottom line is that this 25ft, 6AN braided line is best for builders who need a high-temperature, high-pressure fuel or fluid run and are comfortable with a firm, professional installation. The reviewer found the hose durable and well suited to E85 and other aggressive fuels, with good leak resistance and a useful 25 ft length for longer runs, but notes the braid is relatively rigid and requires attention to routing and compatible fittings.

Key Features

• Size and length: The 6AN PTFE hose provides a 0.31 in inner diameter and 0.45 in outer diameter in a 25 ft length, giving plenty of material for fuel supply and return runs without joining sections.
• Wide temperature range: Rated from -76F to 446F, the hose handles extreme environments such as engine bays and turbocharged setups without softening or degradation.
• High pressure capability: With a 1500 psi working pressure and 4500 psi burst rating, it is suitable for many high-pressure fuel and boost line applications when used with proper fittings.
• Chemical compatibility: PTFE core and braided outer layer accept E85, methanol, diesel, biodiesel, engine oil and transmission fluid, making it versatile across different systems.
• Intended uses: Designed for fuel injection, boost lines, carburetor feed, LS engine swaps and vapor or return lines, it covers common automotive plumbing needs.
• Installation guidance: Installation instructions are included but the hose is relatively stiff, so professional installation and matching PTFE fittings are recommended for best results.

Who It's For

The EVIL ENERGY 6AN PTFE hose is ideal for mechanics, fabricators and enthusiasts installing high-pressure fuel systems, turbo plumbing or LS swap fuel lines who need a chemically compatible hose rated for E85 and other fuels. Its 25 ft length and high temperature rating make it practical for full-vehicle runs and custom setups where durability matters.

It is less suitable for hobbyists who expect a very flexible hose that can be folded tight; the braided PTFE construction is relatively hard and has a minimum bend radius of about 3.5 in, so those needing very tight routing or hand-bendable lines should consider a softer alternative.

Pros & Cons

Pros

• High temperature and pressure ratings provide confidence in demanding engine bays and boosted applications.
• Chemical compatibility with E85, methanol, diesel and oils makes it flexible for many systems.
• Long 25 ft length reduces the need for additional joins and gives layout flexibility for swaps and complex routes.
• Customers report good leak resistance and overall quality, showing real-world durability.

Cons

• The braided PTFE hose is relatively stiff, so it cannot be folded and needs careful routing and professional fittings.
• Some users noted the outer braid can fray if handled roughly, so attention during installation is required.

Specifications

Our Verdict

The EVIL ENERGY 6AN PTFE fuel hose offers strong value for builders who need a long, chemically compatible hose with high temperature and pressure ratings; it is durable and resists leaks when installed with proper fittings. Practical for E85, methanol and diesel applications, it is recommended for experienced installers who can manage its firmer braid and avoid tight bends.

Frequently Asked Questions

Can this hose be used with E85?
Yes, the PTFE core is compatible with E85 gasoline and other fuels listed by the manufacturer.

Is the hose flexible enough for tight engine bay runs?
The hose is relatively stiff with a minimum bend radius of about 3.5 in, so it is not ideal for very tight bends and professional routing is advised.

Will it handle high-pressure fuel systems?
Yes, it is rated to 1500 psi working pressure and 4500 psi burst pressure, suitable for many high-pressure applications when used with correct fittings.