EVIL ENERGY 6AN Male Flare to M18x1.5 Adapter — Black Aluminum, O-Ring Seal, 1500 PSI

The EVIL ENERGY adapter converts a 6AN (9/16-18 UNF) male flare connection to an M18x1.5 metric thread with an O-ring seal, providing a compact, anodized aluminum fitting for power steering and fuel line use.

This precision-machined connector is designed to join AN-style lines to metric ports commonly found on power steering racks, fuel filters and similar hydraulic fittings. Built from 6061-T6 aluminum with an anodized black finish and an NBR O-ring, it balances corrosion resistance and light weight while maintaining a rated working pressure suited for many automotive fluid systems. Use it when you need a reliable transition between imperial flare fittings and M18x1.5 ports without welding or hose re-routing.

How does this adapter create a leak-resistant connection?

The adapter combines a 37° AN flare sealing surface on the 6AN side with a compressed O-ring seal on the M18x1.5 metric thread side. Metal-to-metal flare contact prevents weeping at the AN joint, while the O-ring provides elastomeric sealing for metric ports that rely on radial compression.

• 37° flare seat on 6AN side for traditional AN sealing
• NBR O-ring on metric side to seal threads without thread tape
• Precision machining for concentric seating and uniform compression
• Anodized surface reduces corrosion that can compromise seals

Is this fitting strong enough for power steering systems?

This adapter is rated to 1500 PSI and rated for a broad temperature range, making it suitable for many power steering and low- to mid-pressure fuel-system applications. While robust for hydraulic lines common in street and light-performance vehicles, confirm system peak pressures before installation in specialized high-pressure setups.

• Working pressure: 1500 PSI
• Temperature range: -22°F to 248°F (-30°C to 120°C)
• 6061-T6 aluminum body for high strength-to-weight ratio
• Ideal for typical automotive steering and fuel routing tasks

What materials and finishes protect this adapter from wear and corrosion?

The fitting uses aerospace-grade 6061-T6 aluminum for structural integrity and an anodized black finish to resist oxidation and surface wear. The sealing O-ring is made from NBR (nitrile), chosen for compatibility with common automotive oils and fluids.

• 6061-T6 aluminum body: durable and lightweight
• Black anodized coating: improved corrosion and scratch resistance
• NBR rubber O-ring: good resistance to oils and hydraulic fluids
• Precision threads and surfaces reduce fretting and leaks

How do I use this adapter in my vehicle or project?

Install the adapter by seating the 6AN flare into the mating female AN flare and threading the M18x1.5 side into the metric port until the O-ring compresses. Tighten to proper torque for your system; avoid over-torquing the aluminum body. Inspect seals after initial pressurization and after a short test drive or run.

• Verify port compatibility: 6AN male flare to M18x1.5 female thread
• Hand-start threads, then torque to manufacturer recommendations
• Check for leaks under pressure and re-torque if necessary
• Use in steering racks, fuel filters, hoses, and custom plumbing

Who is this for: The EVIL ENERGY 6AN-to-M18x1.5 adapter is aimed at car enthusiasts, mechanics and fabricators who need a compact, reliable transition between AN flare lines and metric ports. It suits those doing repairs, custom hose builds or retrofits on power steering systems and many fuel-system tasks where a threaded metric port must accept an AN-style line. If you require fittings rated above 1500 PSI or for very high-temperature fluids, consult system specifications or consider a higher-rated solution.