EVIL ENERGY 6AN PTFE Fuel Line Kit 10ft - High Temp, High Pressure

Our review of the EVIL ENERGY 6AN PTFE Fuel Line Kit finds it best suited for enthusiasts doing LS swaps, EFI plumbing upgrades, or anyone needing a durable, high-temperature fuel line. The single biggest reason to buy is reliability: the PTFE core with nylon braid tolerates extreme temperatures and pressures, making it a safe choice for modern fuel systems and for use with E85. Measure your fittings first and allow for professional installation if you are routing tight bends, since the hose is relatively stiff compared with rubber lines.

Key Features

• ID and length: The 5/16 in (0.31 in) inner diameter and 10 ft length provide enough hose for common engine swaps and routing needs without excess joins.
• Temperature range: Rated from -76F to 446F so it remains stable in both cold starts and high underhood heat around performance engines.
• Pressure capacity: A 1500 psi working pressure and 4500 psi burst pressure give a wide safety margin for fuel injection systems and boost conditions.
• Material compatibility: PTFE with nylon braid resists all automotive fuels, lubricants, and coolants so it can be used for fuel and related fluid lines.
• Durability: The nylon braid protects the PTFE core from abrasion and chafing in tight engine bays, extending service life compared with unbraided hose.

Who It's For

This kit is aimed at DIY mechanics and professional shops working on LS swaps, EFI conversions, or flexible installations that require a chemical-resistant line capable of handling E85 and other fuels. It is particularly useful where high temperature tolerance and a high pressure rating are priorities.

Those who need very tight bend radii or a hose that folds easily should look elsewhere or plan additional fittings and routing supports, because the PTFE core is relatively hard and does not bend or fold like rubber hose. Basic hose clamps and fittings are required and professional installation is recommended for complex runs.

Pros & Cons

Pros

• High temperature tolerance ensures consistent performance near hot engine components.
• Strong pressure ratings provide a safety margin for fuel injection and boosted applications.
• Compatible with E85, most fuels, lubricants, and coolants for versatile use.
• 10 ft length covers common routing needs and reduces the number of joins.

Cons

• The PTFE hose is relatively stiff and cannot be folded in half, which can complicate tight installations.

Specifications

Our Verdict

The EVIL ENERGY 6AN PTFE Fuel Line Kit is a practical, value-minded choice for engine swaps and EFI plumbing where high temperature and pressure resistance matter. Its material compatibility and robust pressure ratings make it worth buying for anyone fitting E85 or high-performance fuel systems, but plan routing and bends in advance because the hose is stiff and benefits from professional installation.

Frequently Asked Questions

Can this hose be used with E85?
Yes, the PTFE core and nylon braid are compatible with E85 and most automotive fuels listed in the product details.

Is the hose easy to bend for tight engine bays?
No, PTFE hose is relatively hard and does not fold in half; tight bends may require fittings or careful routing.

How much length is included?
The kit includes 10 ft (3M) of PTFE nylon braided hose as specified.