EVIL ENERGY 6AN PTFE Fuel Line Kit 20FT – E85-Compatible Braided EFI Hose for LS Swaps

Converting Your Fuel Lines to E85

E85 fuel systems require careful consideration of material compatibility, fuel flow demand, and system configuration.

Although ethanol has performance advantages in certain engine builds, it can expose weaknesses in fuel system components that were not designed for high-ethanol blends.

PTFE fuel hose is a popular option for ethanol fuel conversions because of its chemical resistance.

For a complete explanation of fuel line materials, hose selection, and supporting modifications, read our technical guide:

How to Convert to E85 – Upgrading Fuel Lines

This article covers considerations involved in preparing fuel plumbing for ethanol-based fuel systems.

If you’re planning a full E85 conversion, also read:

How to Convert to E85

This guide provides additional context about converting a gasoline-powered vehicle to operate on E85.

Why Fuel Line Material Matters for E85

E85 contains a high percentage of ethanol, although its actual ethanol content varies by season and location.

A compatible fuel system must account for:

• Fuel hose liner compatibility

• Fitting and adapter materials

• O-ring and seal compatibility

• Fuel pump and injector capacity

• Fuel filter compatibility

• Fuel pressure regulation

• ECU calibration for ethanol content and fuel demand

Replacing the fuel lines alone does not make a vehicle ready to run E85.

Designed for LS Swap and Custom EFI Fuel Systems

The EVIL ENERGY 6AN PTFE fuel hose can be used in compatible custom fuel systems built around GM LS engines.

Potential engine applications include:

• LS1 5.7L

• LS2 6.0L

• LS3 6.2L

• LS6 5.7L

• LQ4 and LQ9 6.0L

• LM7 and other 5.3L truck-based LS engines

• Compatible aftermarket EFI engine swaps

The hose can be incorporated into fuel supply or return plumbing where its diameter, flow capacity, and fittings are appropriate.

Is 6AN Large Enough for an LS Swap?

A -6AN hose may be appropriate for many custom EFI systems, but suitability depends on the engine’s fuel consumption, fuel type, hose length, fuel pressure, and allowable pressure drop.

E85 typically requires more fuel volume than gasoline for comparable engine operation, so fuel line sizing becomes especially important.

High-horsepower or long-run applications may benefit from larger fuel lines, but there is no universal horsepower limit for -6AN hose.

For fuel pump sizing information, see our 255LPH vs. 340LPH vs. 450LPH vs. 525LPH Fuel Pump Comparison.

EVIL ENERGY 6AN PTFE Fuel Line Kit Specifications

These are manufacturer-supplied hose specifications. They do not independently certify the working pressure or temperature limits of every completed hose assembly. The lowest-rated fitting, seal, adapter, or other component determines the applicable assembly limit.

Universal Fitment and Custom Applications

The EVIL ENERGY 6AN PTFE hose is a universal performance plumbing product, not a direct replacement for factory fuel lines.

These are potential custom applications, not confirmed bolt-on fitments. Vehicle-specific adapters, fuel rail fittings, and mounting hardware may be required.

Installation Tips for PTFE Braided Fuel Hose

PTFE hose is generally less flexible than comparable rubber-lined hose. It must not be folded, kinked, or forced into sharp bends.

1. Measure the required fuel line length and plan the routing before cutting.

2. Confirm that the hose and every fitting are compatible with the intended fuel.

3. Use hose ends specifically designed for the hose’s PTFE construction and dimensions.

4. Cut the hose cleanly using an appropriate cutting tool.

5. Assemble the hose ends according to the fitting manufacturer’s instructions.

6. Maintain the required minimum bend radius and avoid twisting the hose.

7. Secure the hose away from exhaust components, sharp edges, and moving parts.

8. Use properly matched adapters for the fuel rail, regulator, pump, and tank connections.

9. Pressure-test the completed assemblies and inspect for leaks before operating the engine.

Professional installation is recommended, especially for EFI and ethanol fuel systems.

Important: The advertised 1,500 PSI hose rating does not establish suitability for a gasoline direct-injection high-pressure circuit. Use only components explicitly approved for the intended fuel system.

Frequently Asked Questions

Is this EVIL ENERGY 6AN PTFE hose compatible with E85?

The PTFE inner liner is compatible with E85. Verify that the complete kit’s fittings, seals, and adapters are also approved for E85.

How long is the hose?

The kit is advertised with 20 feet of hose, approximately 6.1 meters.

What is the inside diameter?

The manufacturer specifies a 5/16-inch (0.31-inch) inside diameter and a 0.45-inch outside diameter.

Can I use standard rubber fuel hose fittings?

No. Use fittings designed for the specific PTFE hose construction and dimensions.

Can I use it on an LS swap?

Yes, as part of a properly engineered custom fuel system. Fuel line sizing and adapter requirements depend on the engine and installation.

How many fittings come with the kit?

The supplied description does not specify the number or configuration of included fittings. Confirm the exact package contents before publishing the listing.

Buy the EVIL ENERGY 6AN PTFE Fuel Line Kit at Pro Street Online

Build a more ethanol-resistant custom fuel system with the EVIL ENERGY 6AN PTFE Fuel Line Kit 20FT.

With its PTFE liner, 20-foot length, and manufacturer-advertised high-pressure and temperature capabilities, this hose is a versatile option for compatible E85 conversions, LS swaps, and aftermarket EFI plumbing.

Shop fuel lines, AN fittings, and performance fuel system components at Pro Street Online.