









EVIL ENERGY 6AN Male to 5-16 SAE Quick-Disconnect EFI Fuel Rail Fitting 2-Pack
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Description
xPremium 6AN to 5-16 SAE EFI Fuel Rail Fitting — 2-Pack
Designed for high performance EFI systems, the EVIL ENERGY 6AN to 5-16 SAE quick-disconnect fuel rail fittings combine durability, precision, and practical usability in a compact pair. Crafted from aluminum alloy with a simple push-on design, these fittings aim to provide reliable connections under hood conditions, making it easier to route and secure EFI lines without sacrificing accessibility or speed during maintenance.
Key features and what they mean for you:
- Size and fit: 6AN thread with a 9/16-18 UNF specification; the spring lock ID measures 5/16 inch, helping to align with common EFI components and ensuring a solid seat when connected.
- Leak resistance: A 37 degree flare seal is designed to create a tight interface, reducing the chances of seepage when the system is pressurized.
- Performance range: Rated for up to 1500 psi, these fittings are compatible with typical EFI operating pressures found in many performance and street builds.
- Durability and materials: Made from aluminum alloy 6061-T6 for strength with light weight; the spring lock is a plastic component, designed for straightforward assembly and reliable participation in the connection.
- Versatility of use: Commonly utilized on engine fuel rails, LS swap projects, transmission cooler lines, return lines, and fuel sensor feeds, making them a flexible option for varied under-hood layouts.
Practical advantages and real-world scenarios:
- Dual-pack convenience: Two identical fittings in a single package support twin-line runs or provide a ready replacement for future service needs.
- Push-on ease: The quick-disconnect design supports tool-free connect and disconnect, helping you save time during installation or retrofits.
- Broad applicability: Suitable for a range of high-pressure EFI configurations while fitting within standard hardware compatibility, which can simplify planning for upgrades or LS swap builds.
Notes on expectations: While this kit aims to offer reliable, leak-resistant connections in typical high-psi EFI applications, performance depends on proper installation, compatible mating components, and routine maintenance. Consider these fittings as a flexible option for organizing fuel lines and ensuring clean routing in engine bays and related systems. The 2-pack provides a practical balance of value and readiness for common upgrade or retrofit projects.
Installation tips
- Clean mating surfaces before assembly and verify alignment for a proper seal.
- Inspect the 37-degree flare seating and ensure full engagement without cross-threading.
- Store spare fittings in a dry place away from heat to preserve the integrity of the plastic spring lock.
FAQ
Q: What can I use the EVIL ENERGY 6AN to 5-16 EFI fuel rail fitting for?
A: A high-pressure, sealed aluminum adapter for EFI lines, suitable for fuel rails, LS swaps, and related connections.
Q: What are the key specifications of this fitting?
A: Working pressure up to 1500 psi, temperature range -40°F to 176°F, and a 37-degree seal to reduce leaks.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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