EVIL ENERGY AN6 to -6 Swivel Adapter 2-Pack Aluminum with 1/8" NPT Gauge Port — Compact 1500 PSI Fuel Take-Off

EVIL ENERGY's AN6 male to -6 female swivel adapter with a 1/8" NPT gauge port lets you add a fuel-pressure gauge or sensor inline without cutting lines.

This two-piece aluminum fitting converts a 6AN male flare to a -6 female swivel while providing a 1/8" NPT port for a gauge or sensor. Machined from 6061-T6 aluminum, the adapters are designed for fuel-system installations where you need a compact take-off point for pressure monitoring. The swivel design simplifies assembly in tight spaces, and the included NPT port accepts standard instrumentation when sealed correctly.

How does the swivel fitting make installation easier?

The swivel connection allows you to orient the female outlet independently of the inlet, reducing stress on hoses and preventing twisting during assembly. That flexibility is especially useful when routing lines in crowded engine bays or racecraft fuel systems.

• Swivel female end rotates to align hoses without turning the whole assembly.
• Compact profile fits into confined engine-bay locations.
• Simplifies tightening and torque control during installation.

Will this adapter work with my fuel system and gauge?

Yes, it adapts a 6AN (9/16-18 UNF flare) male connection to a -6 female swivel while offering a 1/8" NPT threaded port for common gauges or pressure sensors. Use appropriate sealant on the NPT port for leak-free service.

• 6AN thread size: 9/16-18 UNF standard for many fuel lines and fittings.
• 1/8" NPT port accepts most inline fuel-pressure gauges and sensors.
• Recommended: PTFE tape or thread sealant on the NPT port to ensure sealing.

What materials and performance limits should I expect?

The adapters are CNC-machined from 6061-T6 aluminum for a strong yet lightweight fitting. They are rated for a maximum working pressure of 1,500 PSI and operate across a broad temperature range, suitable for most automotive and motorsport fuel environments.

• Material: 6061-T6 aluminum for corrosion resistance and reduced weight.
• Maximum working pressure: 1,500 PSI—appropriate for many fuel-system applications.
• Operating temperature range: -40°F to 250°F for wide environmental compatibility.

How should I seal and maintain the NPT gauge port?

NPT threads are tapered and depend on thread sealant for a pressure-tight joint. Apply PTFE tape or a suitable thread compound to the male NPT fitting before installation, and hand-start the threads to avoid cross-threading.

• Use PTFE (Teflon) tape or medium-strength thread sealant on the 1/8" NPT male threads.
• Hand-start, then tighten with a wrench—avoid over-torquing to protect the taper seal.
• Inspect periodically for leaks or loosening in high-vibration applications.

Who is this for? Installers, tuners, and DIY mechanics who need a reliable, compact way to add a pressure gauge or sensor to an AN6 fuel line will benefit from this two-piece adapter set. It's aimed at automotive and motorsport users who require corrosion-resistant fittings with a swivel mounting option. If you run AN6 fuel plumbing and need an inline pressure take-off without cutting or rerouting lines, these adapters provide a practical, reusable solution.