---
product_id: 559726454
title: "EVIL ENERGY 6AN Male to 3/8\" & 5/16\" Quick-Disconnect Female EFI Fuel Rail Fitting Aluminum"
brand: "evil energy"
price: "$35.71"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/559726454-evil-energy-6an-male-to-3-8-and-5-16
store_origin: US
region: United States of America
---

# 1500psi max working pressure 6AN thread size 9/16-18UNF -40°F to 250°F temperature range EVIL ENERGY 6AN Male to 3/8" & 5/16" Quick-Disconnect Female EFI Fuel Rail Fitting Aluminum

**Brand:** evil energy
**Price:** $35.71
**Availability:** ✅ In Stock

## Summary

> ⚡ Fuel your ride with precision and power – don’t get left behind!

## Quick Answers

- **What is this?** EVIL ENERGY 6AN Male to 3/8" & 5/16" Quick-Disconnect Female EFI Fuel Rail Fitting Aluminum by evil energy
- **How much does it cost?** $35.71 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/559726454-evil-energy-6an-male-to-3-8-and-5-16)

## Best For

- evil energy enthusiasts

## Why This Product

- Trusted evil energy brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Extreme Condition Ready:** Operates flawlessly from freezing cold to scorching heat (-40°F to 250°F)
- • **Precision Leak-Proof Seal:** 37° flare angle ensures zero fuel leakage under pressure
- • **Versatile Quick-Disconnect:** Effortlessly switch between 3/8" & 5/16" lines with secure spring lock
- • **Rugged Aluminum Alloy Build:** Crafted from 6061-T6 aluminum for lightweight durability and corrosion resistance
- • **Universal EFI Compatibility:** Perfect for fuel rails, LS swaps, transmission coolers, and fuel sensors

## Overview

The EVIL ENERGY 6AN Male to 3/8" & 5/16" Quick-Disconnect EFI Fuel Rail Fitting is a high-performance aluminum alloy connector designed for professional-grade fuel systems. Featuring a 37° flare seal to prevent leaks, it withstands pressures up to 1500psi and extreme temperatures from -40°F to 250°F. Ideal for engine fuel rails, LS swaps, and transmission coolers, this fitting offers quick, secure disconnection with a durable plastic spring lock, making it a must-have for millennial pros upgrading their ride’s fuel delivery.

## Description

Full description not available

## Features

- [Size] The thread size of 6an is 9/16-18UNF. The ID of the screw is 3/8 inch and 5/16 inch.
- [Seal] The 6an flare efi fitting is sealed at 37 degree angle to avoid leakage.
- [Parameter] Working pressure: 1500psi; Temperature range: -40°F-250°F.
- [Material] Made of aluminum alloy 6061-T6. Spring lock is made of plastic.
- [Application] Widely used in engine fuel rail, ls swap, transmission cooler, return line, fuel sensor, etc.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Size | 6AN to 3/8 & 5/16 |
| Material | Aluminum |
| Brand | EVIL ENERGY |
| Color | Black |
| Connector Type | Flare |
| Thread Size | 9/16-18UNF |
| Exterior Finish | Aluminum |
| Thread Type | UNF |
| Item Weight | 0.04 Kilograms |
| Number of Pieces | 1 |
| Manufacturer | Speedwow Tuning |
| Part Number | 616582 |
| Item Weight | 1.44 ounces |
| Package Dimensions | 4.84 x 4.17 x 0.91 inches |
| Item model number | 616582 |
| Style | Nut Lock - 2PCS |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Size:** 6AN to 3/8 & 5/16
- **Material:** Aluminum
- **Brand:** EVIL ENERGY
- **Color:** Black
- **Connector Type:** Flare
- **Thread Size:** 9/16-18UNF
- **Exterior Finish:** Aluminum
- **Thread Type:** UNF
- **Item Weight:** 0.04 Kilograms
- **Number of Pieces:** 1

## Images

![EVIL ENERGY 6AN Male to 3/8" & 5/16" Quick-Disconnect Female EFI Fuel Rail Fitting Aluminum - Image 1](https://m.media-amazon.com/images/I/61U1Bu7EyuL.jpg)

## Available Options

This product comes in different **Size** options.

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**Shop now:** [https://www.desertcart.us/products/559726454-evil-energy-6an-male-to-3-8-and-5-16](https://www.desertcart.us/products/559726454-evil-energy-6an-male-to-3-8-and-5-16)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-20*