AN Fittings

Upgrade your performance plumbing setup with EVIL ENERGY AN to NPT adapters — engineered for high-pressure reliability and precision sealing. Made from 6061-T6 aluminum with a black anodized finish, these fittings ensure a secure, leak-free connection across fuel, oil, and cooling systems. Ideal for professional tuners and performance enthusiasts looking for a durable, corrosion-resistant fitting that performs under pressure.

• Difference Between AN Size and Thread Size

1. AN Size: Refers to the diameter of the fitting or hose. AN (Army Navy) sizes are standardized hose and pipe connection sizes, measured in 1/16 inch increments. For example, 4AN means the pipe's outer diameter is 4/16 inch (1/4 inch).
2. Thread Size: Refers to the diameter and pitch of the thread, usually in metric or imperial units. For example, M12x1.5 means the thread diameter is 12 mm, and the pitch is 1.5 mm.

• Check Specifications Carefully: Before purchasing, carefully check the specifications of your equipment and pipes to ensure you choose the correct AN Size and Thread Size.

The EVIL ENERGY Female-to-Female AN Union Fitting is a compact and reliable solution for connecting two AN male hose ends. CNC-machined from 6061-T6 aluminum and anodized in black, this straight-through adapter supports 360° swivel, 1500 PSI working pressure, and a precise 37° flare seal. Ideal for EFI conversions, LS swaps, or any high-pressure fluid system where modular plumbing and clean routing are key.

• AN female to AN male flare adapter, compatible with 3AN/4AN/6AN/8AN/10AN/12AN applications.
• Made from high-strength 6061-T6 aluminum alloy with black anodized finish for durability.
• 37° flare sealing design ensures a reliable, leak-free connection.
• 360° swivel construction allows quick, hassle-free installation.
• Withstands up to 1500 PSI working pressure and -65℉ to 252℉ temperature range.

EVIL ENERGY AN Flare Reducer & Expander Adapters provide the perfect solution for transitioning between AN line sizes during fuel system upgrades or engine swaps. Made from durable 6061-T6 aluminum and black anodized for corrosion resistance, these fittings support up to 1500 PSI and are designed with a precision 37° flare seal. Compatible with fuel, oil, and coolant systems—ideal for LS swaps, EFI builds, and custom plumbing setups.

• Universal AN Fitment: Available in 4AN, 6AN, 8AN, 10AN, and 12AN sizes with precise UNF thread for secure connections.
• High-Performance Design: 90° swivel coupler ensures smooth fuel line routing in tight engine bays.
• Durable Construction: CNC-machined from 6061-T6 aluminum with a corrosion-resistant black anodized finish.
• Reliable Sealing: 37° flare angle guarantees leak-free operation under extreme pressure.
• Track & Street Proven: Rated up to 1500 PSI and -65℉ to 252℉, suitable for fuel, oil, coolant, and more.