EVIL ENERGY AN12 to 1/2" NPT Adapter Black 2-Pack — 6061-T6 Aluminum Anodized Straight Fitting, Leak-Resistant

EVIL ENERGY's AN12 male flare to 1/2" NPT straight adapter is a compact aluminum fitting that converts a 12AN (1-1/16-12 UNF) flare connection to a 1/2" NPT tapered pipe thread for fuel, coolant, or steering lines.

This two-piece kit gives you a durable, low-profile solution when you need to join AN12 hose ends to NPT-threaded ports. Machined from 6061-T6 aluminum and finished with a black anodized surface, these straight adapters pair the 37° AN flare sealing geometry with a 60° tapered NPT thread. They are designed for use in vehicle fuel systems, cooling circuits, power steering plumbing and other fluid-transfer applications where combining AN and NPT interfaces is necessary.

How does this adapter ensure a leak-resistant connection?

The AN side uses the standard 37° flare seat to form a metal-to-metal seal against a matching female flare. The NPT side relies on tapered threads to seal, so thread sealant or PTFE tape is strongly recommended to prevent leaks at the pipe thread end. Together, these sealing methods provide a reliable joint when installed correctly.

• AN12 (1-1/16-12 UNF) male flare seats on a 37° flare for metal sealing.
• 1/2" NPT side uses 60° tapered threads requiring sealant or PTFE tape.
• Use correct torque and wrench flats to avoid stripping or distortion.

What materials and finish are used, and why does that matter?

The adapter is CNC-machined from 6061-T6 aluminum, a lightweight alloy known for good strength-to-weight ratio and corrosion resistance when anodized. The black anodized surface adds wear resistance and a uniform aesthetic while protecting the raw metal from oxidation in under-hood environments.

• 6061-T6 aluminum body for strength and low weight.
• Black anodized finish improves corrosion and abrasion resistance.
• Precision machining for accurate thread engagement and consistent sealing.

Where can I use this AN12-to-NPT adapter in my vehicle?

These straight adapters are suited for joining AN12 hose fittings to NPT-threaded ports found on pumps, block fittings, or aftermarket components. Typical uses include fuel lines, oil cooling loops, and power steering hoses; however, ensure compatibility with the fluid and pressure in your system before installation.

• Fuel system connections where an AN line meets an NPT port.
• Cooling and oil cooler plumbing that mixes AN and NPT interfaces.
• Power steering lines and other low- to moderate-pressure fluid pathways.

How should I install and maintain these fittings for best results?

Hand-start threads to avoid cross-threading, then tighten using a wrench on the fitting flats. Apply PTFE tape or a compatible thread sealant to the NPT threads before assembly to ensure a leak-free joint. Inspect periodically for loosening or signs of fluid seepage and retorque if needed following component torque specifications.

• Apply PTFE tape or thread sealant to the 1/2" NPT threads before installing.
• Start threads by hand, then tighten with a wrench on the flats—avoid over-torquing.
• Check connections after initial operation and during routine maintenance for leaks.

Who is this for: This 2-pack is ideal for automotive enthusiasts, race teams, and DIY mechanics who need a reliable way to join AN12 hose assemblies to 1/2" NPT ports. If you work on fuel delivery, oil or coolant plumbing, or power steering setups and require a lightweight, corrosion-resistant adapter that blends AN flare sealing with tapered pipe threads, these EVIL ENERGY fittings offer a practical, easy-to-install option. Note: always confirm material compatibility and pressure ratings for your particular application and use appropriate thread sealants for NPT joints.