Why Use EFI Quick-Disconnect AN Adapters?

Most factory EFI fuel systems use quick-disconnect fuel rail fittings that do not directly connect to aftermarket AN fuel lines. These adapters convert OEM-style push-on fittings into standard 6AN male flare connections for cleaner, stronger, and more serviceable fuel plumbing.

Translation: less wrestling with factory connectors and more actual progress.

[Size] The thread size of 6an is nine/16-18UNF. The ID of spring lock is 3/8 inch and five/16 inch.

Features

• 6AN male flare fitting design
• Compatible with 3/8-inch and 5/16-inch SAE quick-disconnect fuel lines
• Push-on EFI fuel rail connection
• Lightweight billet aluminum construction
• Precision CNC-machined sealing surfaces
• Leak-resistant EFI sealing design
• Corrosion-resistant anodized finish
• Includes 2 fittings per kit
• Compatible with braided AN fuel hose systems

[Seal] The 6an flare efi fitting is sealed at 37 degree perspective to keep away from leakage.

Common Applications

• EFI fuel rail conversions
• LS swap fuel systems
• Return-style fuel setups
• Turbocharged fuel systems
• Fuel pressure regulator plumbing
• Custom AN fuel routing
• High-performance street builds
• Drift and drag race vehicles
• E85-compatible fuel systems

[Parameter] Working pressure: 1500psi, Temperature vary: -forty°F to 176°F.

Perfect for Modern EFI Fuel Systems

AN fuel plumbing has become the standard for performance fuel systems because it improves durability, serviceability, and compatibility with modern fuels compared to aging factory rubber and plastic lines.

These adapters allow builders to retain OEM fuel rail compatibility while upgrading the rest of the fuel system to braided AN plumbing.

Especially important when your upgraded fuel pump sounds like industrial machinery under the back seat.

[Material] Product of aluminum alloy 6061-T6. Spring lock is Product of plastic.

Simplifies Fuel Line Routing

The compact push-on design helps reduce clutter and makes fuel line installation easier in tight engine bays and custom swap applications. Perfect for vehicles where turbo piping, intercoolers, intake manifolds, and wiring already consumed every available inch of space.

Basically designed for engine bays held together by careful measurements and optimism.

Built for Performance Fuels

Compatible with gasoline, E85, ethanol blends, and race fuels, these fittings support the demands of modern high-performance fuel systems and aggressive tuning combinations.

Because E85-powered builds consume fuel like they’re trying to qualify for sponsorship from a gas station.

[Application] Widely utilized in engine fuel rail, ls swap, transmission cooler, go back line, fuel sensor, and so forth.

Why Choose EVIL ENERGY?

EVIL ENERGY continues to provide enthusiasts with affordable and dependable AN fittings, EFI fuel adapters, and performance plumbing hardware. Their quick-disconnect fuel rail fittings deliver strong sealing performance, durable construction, and installation flexibility for both street-driven and motorsports applications.

Because fuel leaks are a terrible way to meet your local fire department.