EVIL ENERGY AN16 Female to Female 90 Degree Swivel Coupler - Full Flow

In this review the EVIL ENERGY AN16 female to female 90 degree swivel coupler is examined for builders and tuners who need a durable, full flow union adapter for fuel, oil, or coolant lines. The bottom line: this one-piece aluminum coupler stands out for its smooth internal flow and compact 90 degree routing, making it a solid pick when space is tight and pressure capacity matters. For anyone swapping AN fittings or re-routing lines where a sealed 37 degree AN seat and a robust 1500 PSI rating are required, this adapter delivers predictable, leak-resistant performance.

Key Features

• AN16 Female to Female: Provides a direct female to female union for AN16 systems, simplifying connections without extra hose end changes.
• One piece full flow design: The single-piece construction minimizes internal restrictions for smoother fluid flow and reduced turbulence.
• 90 degree orientation: The angled profile helps with tight-routing situations and reduces hose twisting in confined engine bays.
• 6061-T6 aluminum construction: Offers good strength-to-weight ratio and corrosion resistance for automotive and motorsport use.
• 37 degree AN sealing: Standard AN sealing provides a reliable metal-to-metal seat when torqued correctly to prevent leaks.
• High working pressure: Rated to 1500 PSI, suitable for many fuel and oil systems that operate under elevated pressure.

Who It's For

This coupler is aimed at automotive enthusiasts, race shops, and DIY tuners who run AN16 plumbing and need a compact, durable 90 degree union with full flow characteristics. It is particularly useful when replacing a damaged swivel or when re-routing lines around tight components.

It is less suited for users who need softer or flexible hose-to-hose connections without metal-to-metal AN seats, or for those who require a different thread standard than 1 5/16-12 UNF. For minimal-pressure plumbing or non-AN systems, a different style of fitting may be a better match.

Pros & Cons

Pros

• One-piece full flow design reduces internal restriction and supports consistent fluid delivery.
• 6061-T6 aluminum keeps weight low while providing solid mechanical strength for automotive use.
• 90 degree geometry simplifies routing in cramped engine bays and reduces hose stress.
• 1500 PSI rating covers a wide range of fuel and oil system requirements.

Cons

• Metal-to-metal 37 degree sealing requires proper installation and torque to avoid leaks; not a quick push-fit solution.
• Limited to AN16/1 5/16-12 UNF thread size, so it is not compatible with smaller AN lines without adapters.

Specifications

Size	AN16 Female to Female
Thread	1 5/16-12 UNF
Material	Aluminum alloy 6061-T6
Sealing	37 degree AN angle
Max Working Pressure	1500 PSI
Working Temperature	-40F to 250F
Design	One piece full flow, 90 degree swivel coupler

Our Verdict

The EVIL ENERGY AN16 90 degree female-to-female swivel coupler is a practical, value-oriented choice for anyone running AN16 plumbing who needs a compact, high-flow union. Its 6061-T6 construction, 1500 PSI rating, and one-piece full flow design make it dependable for racing and street applications, provided the installer is comfortable with AN 37 degree sealing and standard torque procedures.

Frequently Asked Questions

Will this fit standard AN16 hose ends?
Yes, it is designed for AN16 female connections and uses the standard 37 degree AN sealing interface.

What pressure and temperature limits can it handle?
The coupler is rated to 1500 PSI and a working temperature range of -40F to 250F.

What material is the adapter made from?
It is machined from aluminum alloy 6061-T6 for a balance of strength and light weight.