EVIL ENERGY 6AN PTFE Fuel Line Kit 20ft - High Temp, High Pressure

Our review of the EVIL ENERGY 6AN PTFE Fuel Line Kit finds it best suited for builders and DIY mechanics doing LS swaps or EFI fuel system upgrades who need a durable, high-temperature line. The single biggest reason to buy is its PTFE core with nylon braid that tolerates extreme temperatures and pressures, making it a reliable choice for applications using gasoline, E85, lubricants, or coolants. Measure fittings carefully before ordering, since the kit is stiff and requires professional-style routing rather than tight bends.

Key Features

• PTFE core: The PTFE inner tube resists fuel and chemical degradation so it stays stable with gasoline, E85, and many lubricants.
• 6AN sizing: The 6AN inside diameter of 5/16' allows compatibility with common EFI and LS-swap fittings for straightforward installation in many systems.
• High temperature range: Rated from -76F to 446F, the hose is suitable for high-heat engine bays and environments where thermal resistance matters.
• High pressure capability: With a 1,500 PSI working pressure and 4,500 PSI burst rating, the line handles demanding fuel and pressurized fluid applications.
• Long length: The 20 ft length gives enough hose to route multiple lines or outfit a whole project without buying extra lengths.

Who It's For

The kit is ideal for engine builders, LS-swap enthusiasts, and anyone installing an EFI system who needs a long, chemically resistant hose rated for high temperature and high pressure. It works well for fuel, transmission cooler, or other fluid runs where PTFE compatibility is required.

Those who should look elsewhere include hobbyists expecting a highly flexible, bendable hose for tight folding or very compact runs; the PTFE construction is relatively hard and is not intended to be folded in half. People without access to AN fittings or who need custom pre-made assemblies may also prefer a different solution.

Pros & Cons

Pros

• Durable PTFE core with nylon braid offers excellent chemical and heat resistance.
• High working and burst pressures suit EFI and high-pressure applications.
• 20 ft length provides ample material for multiple runs or long routings.
• Customers report good leak resistance and overall value for money.

Cons

• The hose is relatively stiff and cannot be bent or folded in half, so neat routing requires planning and proper fittings.
• Fit feedback is mixed; some buyers may need additional fittings to match existing equipment.

Specifications

Brand	EVIL ENERGY
Size	PTFE 6AN (ID 5/16' / 0.31 in, OD 0.45 in)
Length	20 ft (6 m)
Working temperature	-76F to 446F (-60C to 230C)
Maximum working pressure	1,500 PSI
Bursting pressure	4,500 PSI
Applicable media	Automotive fuels, E85, lubricants and coolants

Our Verdict

The EVIL ENERGY 6AN PTFE Fuel Line Kit is a practical, cost-effective choice for EFI conversions and high-temp, high-pressure fluid runs. It delivers excellent chemical resistance and pressure ratings for fuel and transmission cooler uses, though installers should plan routes and fittings in advance because the hose is stiff. For builders who need a long, reliable PTFE line at good value, this kit is worth considering.

Frequently Asked Questions

Can this hose be used with E85?
Yes, the PTFE construction is compatible with E85 and other automotive fuels as stated in the product information.

Is the hose flexible enough for tight bends?
No, the PTFE hose is relatively hard and should not be folded in half; plan routing and use appropriate fittings for tight sections.

How much hose is included?
The kit includes 20 ft (6 m) of PTFE 6AN hose, which is generally enough for multiple runs or a full swap project.