Why Use a Hardline Compression Adapter?

Converting factory hardlines to AN fittings is one of the cleanest and most reliable ways to upgrade your fuel or fluid delivery system. Compression fittings allow secure integration without requiring complicated welding or flaring in many applications.

Because not everyone owns a fabrication shop. Or wants to pretend they do on YouTube.

Learn how to install AN fittings like this on our DIY article

If this is the wrong size, click on the “buy” link and choose from multiple AN sizes

Features

• 6AN male flare fitting
• Compatible with 3/8-inch hardline tubing
• 90-degree angled adapter design
• Lightweight billet aluminum construction
• Black anodized corrosion-resistant finish
• Compression-style hardline connection
• Leak-resistant precision-machined sealing surfaces
• Compact design for tight routing applications
• Compatible with fuel, oil, coolant, and transmission systems

Size: 6AN male flare to three/8 inch, the thread size of the 6AN is nine/16-18 UNF.Fits to three/8″ OD hardline, please measure before purchase
Subject matter: Manufactured from aluminium alloy fitting and brass ferrule

Common Applications

• Fuel system hardline conversions
• EFI fuel system upgrades
• LS swap fuel plumbing
• Turbocharger oil line routing
• Transmission cooler installations
• Brake and clutch fluid systems
• Custom AN plumbing projects
• Race car fuel delivery systems
• E85-compatible fuel setups

Sealing: The AN thread of the flare is sealed by a 37 degree attitude

Built for Tight Engine Bays

The 90-degree fitting design helps reduce hose stress and routing complexity where straight fittings simply won’t fit. This is especially helpful for compact turbo applications, firewall clearances, frame rail routing, and under-car plumbing setups.

Basically designed for engine bays where every extra inch disappeared three modifications ago.

Application:This 3/8 compression to 6an fitting is widely utilized in fuel delivery, fuel system, engine amendment, and so forth

Ideal for Modern Performance Fuel Systems

AN plumbing has become the standard for high-performance fuel systems thanks to its durability, serviceability, and leak resistance. Pairing hardline tubing with AN adapters creates a professional-grade solution capable of supporting high horsepower and aggressive fuel demands.

Including E85 setups that consume fuel faster than your paycheck disappears after tax season.

Note:Most effective applicable to stainless-steel or aluminum hardline

Why Choose EVIL ENERGY?

EVIL ENERGY offers performance enthusiasts affordable and dependable fittings, adapters, and fluid system hardware designed for modern custom automotive builds. Their AN fitting lineup combines clean machining, durable finishes, and reliable sealing performance for both street and track use.

Because fluid leaks are only funny until they hit the headers.