6AN 20FT PTFE Fuel Line Hose Kit 5/16 in - Durable E85 Nylon Braided

In this review the 6AN 20FT PTFE Fuel Line Hose Kit is examined for everyday enthusiasts and DIY mechanics who need a long, flexible E85-compatible line for fuel or fluid routing. The standout reason to consider this kit is the combination of a full 20 ft of PTFE core hose with braided nylon protection and a set of multiple 6AN fittings, which makes it useful for building or repairing runs without buying separate adapters. For first-time installers the review notes the recommendation to have a professional complete the installation.

Key Features

• Length and construction: The kit includes a full 20 ft of PTFE core hose with black nylon braid, offering a long continuous run for trimming and routing in many vehicle layouts.
• Size and fitment: Hose ID is 5/16 in with an OD of 0.465 in, so it fits applications that require a 6AN 5/16 in feed and simplifies matching to 6AN ports and fittings.
• Temperature and pressure capability: The PTFE hose is rated to operate from -76F to 446F and withstands working pressures up to 3000 psi, making it resilient to high temperature and pressure environments.
• Comprehensive fitting kit: The set ships with ten PTFE hose ends (straight, 45, 90 and 180 degree orientations), two separator clamps, a wrench and gloves, which helps complete common assembly tasks.
• Fluid compatibility: The PTFE inner core accepts E85, pump gas, diesel, oil, coolant and transmission fluid, making the kit versatile across several systems.

Who It's For

The kit is best for automotive hobbyists, engine builders, and performance enthusiasts who need a long length of PTFE-lined 6AN hose to fabricate custom fuel or fluid lines and who are comfortable with or can access professional installation. It is also useful for anyone routing fuel in tighter engine bays because of the included angled fittings.

Those who should look elsewhere include users who need a permanent, high-cycling gasoline line for daily commercial use where extreme durability under constant flex is required, or anyone who cannot confirm the 5/16 in inner diameter will match their components. The manufacturer also advises professional installation for first-time users.

Pros & Cons

Pros

• Long 20 ft length with PTFE core and nylon braid gives flexibility for custom runs and protection against abrasion.
• Wide temperature and pressure ratings provide confidence for high-heat and high-pressure systems.
• Included assortment of 6AN fittings and accessories reduces the need to source separate adapters for common routing angles.

Cons

• Some customers report occasional thread fit issues and a risk of leakage if fittings are not installed carefully or if threads are imperfect.
• Durability concerns have been raised for constant gasoline service in heavy-duty commercial use, so professional installation and inspection are recommended.

Specifications

Hose inner diameter	5/16 in
Hose outer diameter	0.465 in
Hose length	20 ft
Maximum working pressure	3000 psi
Bursting pressure	10000 psi
Working temperature range	-76F to 446F
Included fittings	4 straight, 2 x 45A, 2 x 90A, 2 x 180A plus 2 clamps, wrench and gloves

Our Verdict

The 6AN 20FT PTFE Fuel Line Hose Kit is a practical, cost-effective choice for enthusiasts and builders who need a long, E85-capable 6AN feed with a variety of fittings included. It delivers strong temperature and pressure specs and useful accessories, but buyers should verify sizing, be prepared to install carefully or use a professional, and watch for fitment or thread quality issues on assembly.

Frequently Asked Questions

Is this hose suitable for E85 fuel?
Yes, the PTFE core and nylon braid are compatible with E85 and common fuels listed in the product details.

What size is the hose and how do I confirm fit?
The hose has a 5/16 in inner diameter and a 0.465 in outer diameter; confirm your fittings and ports require a 6AN 5/16 in line before purchase.

Does the kit include everything to install a run?
The kit includes 10 hose ends in multiple angles, two clamps, a wrench and gloves, but a professional installer is recommended for first-time assemblers.