Answering the needs of automotive enthusiasts and professional installers, braided fuel line kits provide durable, heat-resistant, and flexible routing for fuel systems. This guide highlights five top options ideal for high-performance builds, daily drivers needing reliability, and LS/EFI swaps. Each product section explains who benefits most, plus practical cautions to consider before ordering.
Product Comparison Snapshot
| Product | Best For | Key Benefit | Limitations |
|---|---|---|---|
| EVIL ENERGY 6AN Fuel Line Kit 20FT CPE Nylon Braided Hose with 12 Fittings | Builders needing complete kit | Includes 20 ft hose and 12 fittings for flexible routing | Note on AN size and thread compatibility |
| EVIL ENERGY 6AN Fuel Line Kit CPE Nylon Braided Hose Fitting Kit 20FT | Multi-purpose line routing | Versatile fuel, transmission, and vacuum line compatibility | Working pressure caps at 500 psi |
| EVIL ENERGY 6AN Fuel Line Kit CPE Nylon Braided AN6 10FT Black | Space-constrained installs | Compact 10 ft length with same 6AN specs | Shorter length may require more fittings for long routes |
| EVIL ENERGY 8AN Fuel Line Kit 20FT CPE Nylon Braided Hose with 12 Fittings | Higher-flow needs | 8AN sizing for greater capacity | Higher cost and fitting count |
| EVIL ENERGY 6AN PTFE Fuel Line Kit AN6 E85 Nylon Braided Hose 20FT | High-temperature, ethanol blends | PTFE hose with wide temp range and high pressure | PTFE hoses require careful handling |
EVIL ENERGY 6AN Fuel Line Kit 20FT CPE Nylon Braided Hose with 12 Fittings
Best for a complete installation project, this 20 ft kit includes 6AN hose, 12 fittings, and multiple angles for flexible routing. The 0.31″ ID (8 mm) and 0.56″ OD (14.3 mm) hose is built with a CPE inner tube, stainless steel reinforcement, and a braided nylon layer for heat and oil resistance. Aluminum fittings resist corrosion, ensuring durability in engine bays. Best for drivers upgrading fuel lines or builders assembling a new fuel system. Caution: verify AN size and thread type before ordering, as configurations vary and fittings are not interchangeable with NPT.
EVIL ENERGY 6AN Fuel Line Kit CPE Nylon Braided Hose Fitting Kit 20FT
Designed for broad compatibility, this 20 ft kit is commonly used for transmission oil cooler lines, fuel supply, and return lines, as well as vacuum and turbo lines. The nylon braided hose can handle transmission fluid, oil, gas, and diesel. Best for mixed-duty installations where a single kit serves multiple lines. Caution: maximum working pressure is 500 psi, so avoid high-pressure races without confirming system limits.
EVIL ENERGY 6AN 10FT Black CPE Nylon Braided AN6 Fuel Hose
Selected for tighter engine bays, this 10 ft hose maintains 6AN sizing and robust heat resistance. With a working pressure of 750 psi and a burst pressure of 2250 psi, it suits high-performance routes and shorter runs. Best for compact builds or when adding an auxiliary line in restricted spaces. Caution: verify bend radius (63.5 mm) to avoid kinking on tight corners.
EVIL ENERGY 8AN Fuel Line Kit 20FT CPE Nylon Braided Hose with 12 Fittings
High-capacity line routing for fuel and auxiliary lines, the 8AN kit ships with 12 fittings and a 20 ft length. The larger 8AN size supports greater flow for performance builds or heavy-use systems. Best for applications requiring higher volume lines or future expansion. Limitation: the larger diameter requires broader routing allowances and may not fit very tight engine bays without additional fittings.
EVIL ENERGY 6AN PTFE Fuel Line Kit AN6 E85 Nylon Braided Hose 20FT
This PTFE-based kit is designed for extreme temperature resistance and ethanol-compatible fuels such as E85. The hose ID is 0.31″ with a 0.45″ outer diameter and a 20 ft length, handling a maximum working pressure of 1,500 psi and a bursting pressure of 4,500 psi. Best for high-performance engines operating with ethanol blends or high-temperature environments. Caution: PTFE hoses require careful handling to avoid damage from sharp edges during installation.
Buying Guide
What should you consider when choosing a braided fuel line kit?
Identify your engine bay space, desired hose diameter, and required operating pressure. Higher pressures demand sturdier lines and compatible fittings. Consider the fuel type and ethanol content to select PTFE or CPE hoses.
Which size should you pick?
6AN is common for performance builds and provides strong flow with manageable bend radii. 8AN offers more flow for high-performance systems but needs more space. Match the hose inner diameter to the pump output and rail inlet to avoid restrictions.
Are fittings interchangeable?
No. AN fittings are not interchangeable with NPT fittings. Confirm thread type and fitting angles (straight, 45°, 90°, 180°) before purchase to ensure seamless installation.
What about temperature and chemical compatibility?
CPE hoses perform well with fuels and oils in typical racing and street conditions. PTFE hoses excel in high-temperature environments and ethanol-rich fuels, but require careful handling and routing to prevent damage.
How should you plan installation?
Lay out routing paths first, then measure for length and bend radii. Include spare fittings for future adjustments. Avoid sharp bends, heat sources, and contact with moving parts to reduce wear.
What are common pitfalls?
Misinterpreting hose ID, choosing incompatible AN sizes, and underestimating required length can lead to leaks or routing challenges. Always verify compatibility with your vehicle’s fuel system and space constraints.
Who should consider these options?
- Performance enthusiasts swapping or upgrading fuel lines
- Builders installing new fuel systems or race-ready lines
- DIYers needing flexible routing with various angle fittings
Quick reference table: key specs
| Kit | Length | Size | Max Pressure | Fuel Compatibility |
|---|---|---|---|---|
| 20FT CPE Nylon Braided (12 fittings) | 20 ft | 6AN | 750 psi | Gas, oil, race fuels |
| 20FT CPE Nylon Braided (Fitting Kit) | 20 ft | 6AN | 500 psi | Gas, oil, diesel, vacuum |
| 10FT Black CPE Nylon Braided | 10 ft | 6AN | 750 psi | Gas, oil, race fuels |
| 20FT CPE Nylon Braided (8AN) | 20 ft | 8AN | 750 psi | Gas, oil, race fuels |
| 20FT PTFE E85 Nylon Braided | 20 ft | 6AN | 1,500 psi | All automotive fuels including ethanol blends |
FAQ
- What does 6AN mean?
- Can I use these lines with NPT fittings?
- Is a longer hose always better?
- Are PTFE hoses compatible with ethanol fuels?
- What is the safe operating temperature range for these hoses?
- Do these kits include clamps and fittings?
For most users, a 6AN CPE nylon braided kit balances durability, flexibility, and ease of installation. For ethanol-rich fuels or high-temperature environments, consider PTFE options. If space is limited, a 10 ft or compact 6AN kit may be preferable, while 8AN kits suit high-flow needs in larger builds.