Why Use an AN Male-to-Male Coupler?

A male-to-male AN union adapter allows builders to join two female AN hose ends together, extend fluid lines, or integrate additional components into an existing plumbing setup. Straight couplers also maintain unrestricted flow while simplifying line routing.

Translation: less cutting hoses back apart and fewer emergency overnight parts orders.

Size: The thread size of the 6AN male coupler is nine/sixteen-18 UNF.

Features

• 6AN male-to-male flare union adapter
• Straight-through high-flow design
• Lightweight billet aluminum construction
• Black anodized corrosion-resistant finish
• Precision CNC-machined sealing surfaces
• Leak-resistant AN flare connections
• Compact low-profile installation
• Includes 2 fittings per kit
• Suitable for fuel, oil, coolant, vacuum, and transmission systems

Seal: The AN thread of the flare is sealed by a 37-degree attitude.

Common Applications

• EFI fuel systems
• Return-style fuel setups
• Turbocharger oil feed and return lines
• Oil cooler plumbing
• Catch can routing
• LS swap fuel systems
• Transmission cooler systems
• Drift and race car plumbing
• Custom AN fluid routing projects

Parameter: The utmost working pressure is 1,500 PSI, and the working temperature vary is -forty°F to 250°F.

Straight Design for Maximum Flow

The straight-through internal design minimizes restriction while maintaining strong flow characteristics for high-performance fuel and fluid systems. Ideal for applications where unrestricted fluid delivery and clean hose routing are critical.

Especially important when your fuel system already flows enough E85 to affect regional fuel prices.

Subject material: The coupler is manufactured from aluminum alloy 6061-T6.

Perfect for Custom AN Plumbing

AN plumbing systems provide improved durability, serviceability, and compatibility with modern fuels compared to traditional rubber hose systems. These couplers make it easy to expand or modify custom plumbing layouts without replacing entire hose assemblies.

Because “future upgrades” always become current upgrades eventually.

Application: The male-to-male flares coupler is frequently utilized in fuel systems, such as extending fuel hoses, connecting lines to fuel pumps, and cooler systems.

Compact and Durable Construction

The billet aluminum body offers lightweight durability while resisting corrosion and wear from fuel, oil, coolant, and harsh environmental conditions. The black anodized finish also delivers a clean motorsports-inspired appearance.

Translation: your engine bay looks less like random hardware store plumbing.

Built for Modern Performance Systems

Compatible with gasoline, E85, ethanol blends, methanol, race fuel, oil, coolant, and transmission fluid systems, these adapters support the demands of high-performance street and motorsports builds.

Because modern fuel systems consume fuel with absolutely no concern for your wallet.

Why Choose EVIL ENERGY?

EVIL ENERGY continues to provide enthusiasts with affordable and dependable AN fittings, fuel system adapters, and performance plumbing hardware. Their flare union adapters deliver reliable sealing performance, durable construction, and universal compatibility for both street-driven and race-focused applications.

Because fluid leaks should never become part of your tuning strategy.