EVIL ENERGY 12AN PTFE Fuel Line Kit 5/8in ID 20ft - High Temperature

In this review the EVIL ENERGY 12AN PTFE Fuel Line Kit is assessed for builders and hobbyists who need a long, durable fuel line for high temperature and high pressure applications. The single biggest reason to buy is its PTFE core with nylon braid that tolerates extreme temperatures and pressures, making it suitable for performance fuel systems where reliability matters. The kit ships as a 20 ft length with 12AN sizing, and while installation benefits from experience, the hose itself delivers the chemical compatibility and strength expected of a PTFE fuel line.

Key Features

• 12AN sizing: The 5/8in inner diameter and 0.79in outer diameter provide a common performance fit for many fuel systems and components.
• Extended length: The 20 ft (6M) length allows flexible routing and enough material for custom installations without multiple joins.
• Wide temperature range: Rated from -76F to 446F (-60C to 230C), it handles both cold starts and high under-hood temperatures without degrading.
• High pressure capability: A maximum working pressure of 1000psi and bursting pressure of 3000psi make it appropriate for regulated and high-pressure applications.
• Chemical compatibility: The PTFE core is suitable for all automotive fuels, lubricants, and coolants, reducing the risk of swelling or breakdown.
• Durable construction: The nylon braid adds abrasion resistance and a neat finished appearance for installations where routing and wear are concerns.

Who It's For

The EVIL ENERGY 12AN PTFE fuel hose kit is best for automotive enthusiasts, engine builders, and tuners who need a reliable, long run of PTFE-lined hose for high temperature and high pressure fuel systems. It fits projects that use 12AN fittings and those that require chemical resistance to ethanol blends and modern fuels.

Those who should look elsewhere include do-it-yourselfers seeking a very flexible hose for tight bends or folding, since PTFE lined hose is relatively stiff and not intended to be folded in half. Also, users who want a pre-terminated hose with fittings included should confirm what is supplied, as fittings alignment has been mentioned as a potential installation challenge.

Pros & Cons

Pros

• High temperature and pressure ratings make it suitable for demanding automotive fuel systems.
• Chemically compatible PTFE core resists a wide range of fuels, lubricants, and coolants.
• Long 20 ft length reduces the need for joins and gives flexibility in routing installations.
• Attractive nylon braid adds abrasion resistance and a finished look to visible runs.

Cons

• PTFE hose is relatively hard and not suitable for tight bends or folding, so professional installation is recommended.
• Some customers report fittings alignment issues during assembly, which can complicate installation for less experienced users.

Specifications

Size	12AN (5/8in ID)
Outer Diameter	0.79in
Length	20 ft (6M)
Working Temperature	-76F to 446F (-60C to 230C)
Max Working Pressure	1000psi
Bursting Pressure	3000psi
Applicable Medium	All automotive fuels, lubricants, and coolants

Our Verdict

The EVIL ENERGY 12AN PTFE Fuel Line Kit is a pragmatic choice for anyone needing a long, chemically resistant fuel hose that can withstand high temperatures and pressures. It offers good value for performance builds and custom routing, but installers should be comfortable working with stiffer PTFE hose and prepared for potential fitting alignment work. Overall, it is a dependable option for engine builders and tuners seeking durability and compatibility.

Frequently Asked Questions

Is this hose compatible with E85 and other ethanol blends?
Yes. The PTFE core is suitable for E85 and other automotive fuels, providing chemical resistance to ethanol blends.

Can the hose be folded or bent sharply during installation?
No. PTFE hose is relatively hard and should not be folded in half; avoid sharp bends and consider routing or supports to prevent kinking.

Will the kit include fittings or adapters ready to attach?
The product includes components shown in the picture, but customers report occasional alignment issues with fittings, so verify fitment and be prepared for professional installation if needed.