EVIL ENERGY 6AN PTFE Stainless Braided Fuel Line Kit 25ft - High Temp

In this review the EVIL ENERGY 6AN PTFE stainless steel braided fuel line kit is examined for enthusiasts doing EFI LS swaps, turbo feed work, or general high temperature fuel plumbing. The bottom line: it is a robust, high-pressure PTFE hose assembly best for users who need chemical compatibility and heat resistance; the kit's greatest selling point is the PTFE core with stainless braid that tolerates fuels and extreme temperatures where rubber lines would fail.

Key Features

• AN-6 PTFE Core: Provides wide chemical compatibility so the hose can be used with gasoline, E85, lubricants and many coolants without rapid degradation.
• Stainless Steel Braid: Delivers abrasion resistance and added tensile strength for high pressure and elevated temperature environments.
• High Pressure Rating: With a 1500 psi working pressure and 4500 psi burst, the hose is suitable for many EFI, turbo oil and transmission cooler lines.
• Wide Temperature Range: Operates from -76F to 446F so it handles cold starts and sustained heat near exhaust or turbo components.
• 25 ft Length: Long continuous run allows routing through engine bays for swaps and conversions without many joints.
• Consistent Dimensions: 5/16 in inner diameter and 0.43 in outer diameter make it suitable for AN-6 fittings when matched correctly.

Who It's For

This kit is aimed at mechanics, hobbyists and professional builders doing LS engine swaps, EFI conversions or adding turbo oil/boost feed lines who need a durable, chemically compatible hose that tolerates heat and pressure. It is also useful for custom fuel return, vapor or vacuum lines where PTFE benefits outweigh flexibility.

Those who should look elsewhere include installers who require highly flexible or folded routing since the PTFE hose is relatively stiff and cannot be folded in half; also buyers who are unsure of exact inner diameter fit should confirm measurements before purchase to avoid misalignment with fittings.

Pros & Cons

Pros

• High chemical compatibility and heat tolerance make it reliable with E85 and other fuels.
• Strong stainless braid resists abrasion and increases overall line durability in harsh conditions.
• Robust pressure ratings allow use across fuel, oil feed and transmission cooler applications.
• Long 25 ft length reduces the need for multiple couplers on large swaps.

Cons

• Relatively stiff PTFE hose can be difficult to route in tight areas and cannot be folded.
• Some customers reported fitment and occasional leakage issues when fittings and hose alignment were not matched precisely.

Specifications

Inner Diameter	5/16 in (0.31 in)
Outside Diameter	0.43 in
Length	25 ft
Working Temperature	-76F to 446F (-60C to 230C)
Maximum Working Pressure	1500 psi
Bursting Pressure	4500 psi
Typical Uses	EFI LS swaps, fuel injection, turbo oil feed, transmission cooler lines

Our Verdict

The EVIL ENERGY 6AN PTFE braided fuel line kit is a sensible choice for builders who prioritize chemical compatibility, heat resistance and high pressure capability during EFI conversions or turbo plumbing. It represents good value when measured and installed professionally, but installers who need extreme flexibility or who cannot verify fitting alignment beforehand should consider alternative hose types.

Frequently Asked Questions

Is this hose compatible with E85?
Yes, the PTFE core is compatible with E85, gasoline and many lubricants and coolants.

Can the hose be folded to fit tight bends?
No, PTFE hose is relatively stiff and should not be folded; use proper routing and fittings for bends.

Will it handle turbo oil feed pressure and heat?
Yes, the 1500 psi working pressure and -76F to 446F temperature range make it suitable for turbo oil feed applications when installed correctly.