Why Use an AN to NPT Adapter?

Many aftermarket fuel system components such as regulators, gauges, sensors, and distribution blocks use NPT pipe threads instead of AN flare connections. These adapters allow builders to integrate those components into modern AN plumbing systems safely and cleanly.

Translation: fewer questionable fittings stacked together like plumbing Jenga.

Features

• 6AN male flare to 1/4-inch NPT adapter
• Straight-through high-flow design
• Lightweight billet aluminum construction
• Black anodized corrosion-resistant finish
• Precision CNC-machined sealing surfaces
• Leak-resistant AN flare connection
• Compact low-profile installation
• Includes 2 fittings per kit
• Suitable for fuel, oil, coolant, air, and fluid systems

Size: The correct is an AN6 to at least one/4″ NPT adapter, and the thread size of the 6AN is 9/16-18 UNF.

Common Applications

• EFI fuel systems
• Fuel pressure regulator plumbing
• Fuel pressure gauge installations
• Oil cooler systems
• Turbocharger oil feed and return lines
• Sensor and sender installations
• Catch can systems
• LS swap fuel setups
• Motorsport AN plumbing projects

Subject matter: The correct is manufactured from aluminum alloy 6061-T6 with an anodized black surface.

Durable Billet Aluminum Construction

The billet aluminum body provides lightweight durability and corrosion resistance while maintaining a clean motorsports-inspired appearance. The black anodized finish also helps resist wear from harsh engine bay temperatures and fluid exposure.

Because rusty fittings and leaking connections are terrible performance upgrades.

Sealing: The AN side of the flare is sealed at a 37-degree angle, and the NPT thread side is sealed with 60-degree tapered threads.

Straight Design for Maximum Flow

The straight-through configuration minimizes restriction while maintaining strong flow characteristics for high-performance fuel and fluid systems. Ideal for clean routing layouts where unrestricted flow and simple installation matter.

Especially important when your fuel system already moves enough E85 to financially destabilize your week.

Application: The correct is widely utilized in fuel systems, cooling systems, power steering systems, and more.

Perfect for Gauges and Sensors

The 1/4-inch NPT side is commonly used for:

• Fuel pressure gauges
• Oil pressure sensors
• Temperature sensors
• Fluid distribution blocks
• Air and vacuum systems
• Turbo oil feed components

Because aftermarket parts manufacturers apparently enjoy making every thread size different on purpose.

Notice: To make sure no leakage on the NPT end, sealant or PTFE tape is strongly really helpful. The correct lets in simple installation and removal with a wrench.

Built for Modern Performance Systems

Compatible with gasoline, E85, ethanol blends, methanol, race fuel, oil, coolant, air, and transmission fluid systems, these adapters support the demands of modern street and race builds.

Basically built for cars where fuel flow is measured in gallons per bad financial decision.

Why Choose EVIL ENERGY?

EVIL ENERGY continues to provide enthusiasts with affordable AN fittings, NPT adapters, and performance plumbing hardware for custom automotive projects. Their AN-to-NPT adapters deliver reliable sealing performance, durable construction, and universal compatibility for both street-driven and race-focused applications.

Because fluid leaks are significantly less enjoyable than dyno numbers.