Why Use a Hardline Compression Adapter?

Compression fittings make it easier to integrate factory or custom hardline tubing into AN plumbing systems without requiring extensive fabrication or welding. They provide a clean, serviceable connection while maintaining strong sealing performance under pressure.

Translation: fewer leaks, fewer headaches, slightly fewer angry garage noises. Especially if you are looking to convert to E85 fuel.

Size: 4AN male flare to one/4 inch, the thread size of the 4 AN is 7/16-20 UNF. Fits to one/4″ OD hardline, please measure before purchase.

Features

• 4AN male flare fitting
• Compatible with 1/4-inch hardline tubing
• Lightweight billet aluminum construction
• Black anodized corrosion-resistant finish
• Compression-style hardline connection
• Precision CNC-machined sealing surfaces
• Leak-resistant AN flare design
• Compact installation profile
• Suitable for fuel, oil, brake, clutch, and hydraulic systems

Subject matter: Made from aluminium alloy fitting and brass ferrule.

Common Applications

• Brake line conversions
• Clutch hydraulic systems
• Fuel hardline routing
• Oil pressure and feed systems
• Custom AN plumbing setups
• Turbocharger fluid systems
• Race car hydraulic plumbing
• Drift and track car builds
• Street performance applications

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

Perfect for Custom Fluid Routing

AN plumbing systems provide improved durability, serviceability, and appearance compared to aging factory rubber or steel line configurations. Pairing hardline tubing with AN fittings allows builders to create cleaner and more reliable fluid systems for both street and motorsports applications.

Especially useful when your engine bay no longer has room for anything except carefully angled fittings and regret.

Application:This 1/4 compression to 8an fitting is widely utilized in fuel delivery, fuel system, engine amendment, and so on.

Compact and Lightweight Design

The small-profile billet aluminum design helps simplify installation in crowded engine bays, firewall routing areas, and underbody chassis plumbing. The corrosion-resistant finish also helps protect against brake fluid, fuel exposure, and harsh environmental conditions.

Because rust belongs on abandoned project cars, not your fresh build.

Built for High-Performance Systems

Whether supporting brake pressure, fuel delivery, or oil routing, this adapter is designed to maintain reliable sealing performance under demanding operating conditions. Compatible with modern AN plumbing systems, it’s ideal for enthusiasts building custom fluid systems that require both reliability and clean presentation.

Because “temporary fuel line routing” somehow always becomes permanent.

Note:Most effective appropriate to stainless-steel or aluminum hardline.

Why Choose EVIL ENERGY?

EVIL ENERGY continues to provide enthusiasts with affordable and dependable AN fittings, adapters, and performance plumbing hardware for custom automotive projects. Their hardline compression fittings deliver strong sealing performance, clean installation flexibility, and durable construction for both street and race applications.

Because chasing leaks after everything is assembled is not a personality trait.