EVIL ENERGY 8AN Male to 1/2" Hardline Compression Fitting

EVIL ENERGY 8AN male to 1/2" hardline compression adapters are aluminum fittings that convert an 8AN (3/4-16 UNF) flare connection to a 1/2" OD hardline using a brass ferrule, sold as a two-piece set.

These compact adapters let you join an 8AN male flare connection to 1/2" stainless or aluminum hardline with a reliable 37° flare seal. Constructed with an aluminum body and brass ferrule, they are intended for fuel delivery, engine plumbing, and other automotive fluid routing where a compression-style hardline attachment is needed. Check your tube outside diameter and thread specification before ordering to ensure compatibility.

How does this adapter connect an 8AN flare to a 1/2" hardline?

The adapter screws into an 8AN female flare port using the 3/4-16 UNF thread and seals on the standard 37° flare angle. The opposite end accepts a 1/2" OD hardline using a brass ferrule that compresses onto the tube for a leak-resistant hold.

• 8AN male thread: 3/4-16 UNF, mates to standard 37° flare fittings.
• Hardline end: designed for 1/2" outside diameter tubing.
• Ferrule compression: brass ferrule compresses to secure the tube.
• Sold as 2 pieces for routing multiple lines or spare use.

What materials and sealing methods are used for durability?

The body is machined from aluminum alloy to keep weight down while resisting corrosion in typical automotive environments. A brass ferrule is used at the hardline junction because brass deforms predictably under compression, forming a tight mechanical seal with stainless or aluminum tubing.

• Aluminum alloy body: lightweight and corrosion-resistant.
• Brass ferrule: forms a reliable compression seal with tubing.
• 37° flare interface: industry-standard sealing geometry for AN systems.
• Black finish: protective coating that reduces surface wear and glare.

Where and when should you use this 1/2" compression to 8AN fitting?

Use this adapter when converting factory or custom hardline fuel, oil, or vacuum lines to AN-style fittings, or when routing AN hoses into rigid hardline systems. It’s suitable for many aftermarket engine, fuel delivery, and turbo plumbing applications, but only with stainless steel or aluminum tubing.

• Fuel rails, return lines, and fuel pumps that require AN connections.
• Engine bays where a mix of hardline and braided AN hose is needed.
• Custom plumbing and repairs on aluminum or stainless hardline.
• Not recommended for soft plastic or copper tubing applications.

Who is this for? Mechanics, fabricators, and DIY tuners who work on performance or custom vehicles and need a compact, industry-standard adapter to bridge AN fittings with rigid 1/2" hardline. These adapters suit anyone installing or modifying fuel systems, oil lines, or other fluid circuits that require a 37° AN seal and a compression-style connection to metal tubing. Before purchasing, confirm your hardline outside diameter is 1/2" and that you are using stainless steel or aluminum tubing for a proper seal.