EVIL ENERGY 4AN PTFE Fuel Line Kit, AN4 E85 Fuel Hose 10FT - High Temp

In this review the EVIL ENERGY 4AN PTFE Fuel Line Kit is evaluated for drivers and hobbyists who need a durable, high-temperature fuel hose for performance or replacement work; the single biggest reason to buy is its PTFE nylon braided construction that handles extreme temperatures and high pressure while remaining compatible with fuels, lubricants, and coolants. The kit's 10 ft length and AN4 (ID 3/16'') sizing make it a practical choice for routed fuel systems, though buyers should measure carefully and plan for professional installation because the hose is relatively stiff.

Key Features

• ID and length: The 3/16' (0.19 in) inner diameter and 10 ft length provide enough hose to route fuel for many single-engine applications without buying extra material.
• Temperature range: Rated from -76F to 446F (-60C to 230C), the hose resists heat in engine bays and under-hood locations where ordinary rubber lines would soften.
• High pressure capability: A 1500 psi maximum working pressure and 4500 psi burst pressure deliver confidence for high-pressure fuel systems and return lines.
• Material construction: PTFE core with nylon braid offers chemical compatibility with automotive fuels including ethanol blends and increased abrasion resistance compared with bare PTFE.
• Compatibility: Suitable for all automotive fuels, lubricants, and coolants, making it versatile for fuel feed, return, and some fluid-transfer uses.
• Installation caution: The hose is relatively hard and resists tight bending, so planning and proper fittings are important for a leak-free installation.

Who It's For

This kit is for mechanics, fabricators, and enthusiasts installing or upgrading AN4 fuel lines where high temperature and pressure resistance matter, such as turbocharged or race-inspired builds and conversions using E85 or other aggressive fuels. It works well for those who appreciate a pre-cut 10 ft length and are comfortable with AN fittings and hose routing.

It is not ideal for DIYers expecting a flexible, foldable hose for very tight bends or for installations that need very soft, rubber-like routing. Because the PTFE line is relatively stiff, people without fitting tools or experience should seek professional installation to avoid leaks or poor fitment.

Pros & Cons

Pros

• High temperature rating keeps performance stable under heat exposure common in engine bays.
• Strong working and burst pressures suit higher-pressure fuel applications safely.
• Good chemical compatibility means use with E85 and a wide range of automotive fluids.
• Comes as a full 10 ft length, which often covers routing needs without extra purchases.

Cons

• The PTFE hose is relatively hard and cannot be folded in half, which limits tight routing and requires careful planning.
• Some users report mixed experiences with fittings and minor leakage, so careful assembly and proper fittings are essential.

Specifications

Inner diameter	3/16' (0.19 in)
Outer diameter	0.36 in
Length	10 ft
Working temperature	-76F to 446F (-60C to 230C)
Maximum working pressure	1500 psi
Bursting pressure	4500 psi
Compatible media	Automotive fuels, lubricants, coolants

Our Verdict

The EVIL ENERGY 4AN PTFE Fuel Line Kit is a solid choice for anyone needing a heat- and pressure-resistant AN4 hose for performance or replacement work; its construction and ratings deliver good value for fuel systems exposed to aggressive fuels or high temperatures. Buyers should measure carefully and plan for professional assembly because the hose is stiff and correct fittings are critical to avoid leaks.

Frequently Asked Questions

Can this hose be used with E85?
Yes, the PTFE core and nylon braid are compatible with E85 and other automotive fuels, lubricants, and coolants.

Is the hose easy to bend around tight corners?
No, the PTFE hose is relatively hard and cannot be folded in half; tight bends require planned routing and suitable fittings.

Will this handle fuel system pressure on performance cars?
Yes, with a 1500 psi working pressure and 4500 psi burst pressure, it is suitable for most high-pressure fuel applications when properly installed.