EVIL ENERGY 4AN Straight Hose End Fittings — 2‑pack 6061‑T6 swivel, 37° AN seal, 1500 PSI

EVIL ENERGY 4AN straight hose end fitting — a 2-piece, 6061-T6 aluminum swivel connector engineered for stainless-steel and nylon braided fuel lines.

These EVIL ENERGY 4AN straight fittings provide a reusable, high-pressure connection for braided CPE fuel hoses. Designed with a 37° AN sealing angle and a 360° swivel, they let you line up fuel hoses without twisting the hose body. Built from aircraft-grade 6061-T6 aluminum and rated for up to 1,500 PSI, the pair is suitable where strength, corrosion resistance, and easy assembly matter.

How does the 4AN fitting seal and stay leak-resistant?

The fitting uses the AN standard 37° flare seating to create a metal-to-metal seal that’s widely adopted in performance fuel systems. When properly torqued into a matching AN flare or port, the angled face compresses against the mating surface, preventing leaks without additional sealing materials. Because the AN connection is a mechanical metal seal, it’s reliable across repeated installations if threads and flares remain undamaged.

• 37° AN flare angle for metal-to-metal sealing
• 7/16-20 UNF thread size on the male thread
• Reusability when fittings and flares are inspected and undamaged
• Compatible with standard AN ports and adaptors

Will these straight hose ends work with my braided fuel hose?

Yes — these swivel hose ends are made specifically for stainless steel braided and nylon braided CPE fuel hoses. The design secures the braid and hose core while the swivel nut allows final orientation without twisting the hose, which minimizes stress on the assembly. Ensure the hose ID matches the fitting AN size for a correct, leak-free installation.

• Intended for stainless steel braided and nylon braided CPE hoses
• 360° swivel nut for orientation without hose torque
• Check hose inner diameter compatibility with 4AN fittings
• Requires proper hose assembly and clamping methods

What are the strength and temperature limits of these fittings?

Manufactured from 6061-T6 aluminum, the fittings combine a favorable strength-to-weight ratio with corrosion resistance for automotive and racing environments. They are rated to a maximum working pressure of 1,500 PSI and operate across a wide temperature band, making them suitable for typical engine bay and fuel system conditions. For extreme chemical exposure or temperatures beyond the specified range, verify material compatibility before use.

• Material: 6061-T6 aluminum alloy
• Maximum working pressure: 1,500 PSI
• Operating temperature range: -40°F to 248°F (-40°C to 120°C)
• Reusable and recyclable construction

How does the 360° swivel feature help during installation?

The swivel nut spins independently of the hose body so you can tighten the fitting and then rotate the hose to the desired final position without twisting the braided sleeve. This reduces the likelihood of kinks, braid damage, or stress points at the hose end. The result is a cleaner routing and longer-lasting hose assemblies, especially in cramped or custom installations.

• Swivel design allows final hose positioning after tightening
• Minimizes hose twist and braid distortion
• Simplifies routing in tight engine-bay spaces
• Facilitates repeated disassembly and reassembly

Who is this for: EVIL ENERGY 4AN straight hose end fittings are aimed at automotive enthusiasts, race teams, custom-fabrication shops, and DIY mechanics who work with braided fuel lines and need durable, high-pressure AN connections. They suit applications that demand a clean, easily rotated termination — from fuel-delivery plumbing to oil or coolant lines compatible with AN fittings — provided the hose type and size match the 4AN dimensions.