EVIL ENERGY 6AN PTFE Fuel Line Kit 5/16in ID 20ft - High Temp/High

In this review the EVIL ENERGY 6AN PTFE Fuel Line Kit is assessed for drivers and builders who need a durable, high-temperature fuel line for performance engines and conversions. The bottom line is that the kit delivers a long run of PTFE-lined, nylon-braided hose that stands up to extreme temperatures and pressures, making it a solid choice for fuel, lubricant, and coolant plumbing where resistance to heat and chemical attack matters most.

Key Features

• Size: The kit provides 20 ft of 6AN hose with a 5/16in (0.31in) ID and 0.45in OD, which is long enough for multi-run routing in most engine bays.
• Temperature range: PTFE construction resists extremes from -76F to 446F (-60C to 230C), useful where lines are exposed to heat near turbochargers or exhaust components.
• High working pressure: The hose is rated to 1500 psi working pressure and 4500 psi burst, giving a large safety margin for high-pressure fuel systems.
• Chemical compatibility: The PTFE inner liner is suitable for automotive fuels, lubricants, and coolants, reducing the risk of swelling or breakdown from ethanol blends like E85.
• Durable outer braid: Nylon braid adds abrasion resistance and a neat finished appearance while helping keep the hose stable under pressure.

Who It's For

This kit is best for automotive enthusiasts, performance tuners, and professional installers who need a reliable PTFE fuel line for projects using E85 or high-pressure pumps. It suits builds that require long continuous runs or multiple custom fittings because the 20 ft length and 6AN size are commonly used in aftermarket fuel systems.

Those who should look elsewhere include DIYers expecting very flexible hose for tight, foldable routing or anyone uncomfortable with professional installation; the PTFE hose is relatively stiff and cannot be sharply bent or folded, and proper cutting and fitting are important to avoid assembly issues.

Pros & Cons

Pros

• High temperature tolerance makes it appropriate for engine-bay installations near heat sources.
• Strong pressure ratings provide confidence for high-pressure fuel pumps and return systems.
• Good chemical compatibility for fuels, lubricants, and coolants including ethanol blends.
• 20 ft length covers multiple runs or complex routing without splicing.

Cons

• PTFE hose is relatively hard and cannot be folded or sharply bent, requiring careful routing and sometimes additional fittings.
• Some customers report alignment issues between fittings and hose during assembly, so experienced installation is recommended.

Specifications

Brand	EVIL ENERGY
Size	6AN (ID 5/16in, OD 0.45in)
Length	20 ft (6 m)
Working temperature	-76F to 446F (-60C to 230C)
Max working pressure	1500 psi
Bursting pressure	4500 psi
Compatible media	Automotive fuels, lubricants, coolants

Our Verdict

The EVIL ENERGY 6AN PTFE Fuel Line Kit is a practical, value-minded choice for anyone building or upgrading a high-pressure fuel system that must resist heat and chemical attack. It offers robust pressure and temperature specs and a useful 20 ft length, but buyers should plan for professional-style installation because the hose is stiff and some fittings may need careful alignment.

Frequently Asked Questions

Is this hose compatible with E85?
Yes. The PTFE liner is suitable for ethanol blends such as E85 and for common automotive fuels and lubricants.

Can the hose be bent or folded to fit tight spaces?
No. The PTFE hose is relatively hard and should not be sharply bent or folded; use additional fittings or routing to avoid kinks.

Will this kit handle high-pressure pumps?
Yes. The hose has a max working pressure of 1500 psi and a burst pressure of 4500 psi, suitable for many high-pressure setups.