AN4 AN6 AN8 AN10 AN12 Flare Thread Hex Head Blanking Plugs, Aluminum Anodized

Main Description

Meet the AN4 AN6 AN8 AN10 AN12 Flare Thread Hex Head Blanking Plugs in a sleek anodized black finish. Crafted from high‑performance aluminum alloy 6061-T6, these plugs deliver a rare blend of light weight and rugged durability for automotive and fluid system use. Their precise flare thread design ensures reliable engagement and a tight seal, making them ideal for capping off unused ports in fuel rails, radiators, oil coolers, and other components without sacrificing performance.

The anodized surface treatment boosts corrosion resistance and longevity, helping components stand up to harsh engine bay environments. The hex head and socket design makes installation and removal straightforward, even in tight spaces, while the reusable flare straight thread construction supports long‑term use across multiple projects. Available in AN4, AN6, AN8, AN10, and AN12 sizes (with related TF-AN4/6/8/10/12 variants), these plugs are built to fit a wide range of systems and applications.

Designed for universal fluid compatibility, these plugs are suitable for oil, lubricants, diesel, and fuel. They are a practical solution for sealing off unused lines during maintenance, customization, or when upgrading your fuel or cooling systems. They pair well with compatible AN fittings and cap lock adaptors, offering a dependable seal and straightforward service in everyday automotive tasks.

Model variants TF-AN4-ONE, TF-AN6-ONE, TF-AN8-ONE, TF-AN10-ONE, TF-AN12-ONE cover the common AN sizes, making it easy to select the right plug for your setup. Originating in mainland China, these components are engineered to withstand the demands of automotive environments while maintaining a compact, easy‑to‑install form factor.

All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.

At intercyprus.com since 2002 — trusted for quality and reliability.

Benefits & Tips

• Use to safely seal off unused ports on fuel rails, radiators, oil coolers, or fuel pumps, preventing leaks and contamination while keeping your system modular.
• Choose the correct AN size (AN4, AN6, AN8, AN10, or AN12) to ensure precise thread engagement and a secure seal. Pair with compatible flare fittings for a leak-free connection.
• During maintenance or upgrades, keep your system clean and leak‑free by replacing old plugs with these anodized aluminum plugs, then torque to manufacturer specifications for a reliable seal.

Product Specifications

• Model Names: TF-AN4-ONE / TF-AN6-ONE / TF-AN8-ONE / TF-AN10-ONE / TF-AN12-ONE
• Material: Aluminum alloy 6061-T6
• Color: Black
• Type: Flare thread hex head blanking plug
• Finish: Anodized surface treatment for improved durability and corrosion resistance
• Thread Type: Flare (AN standard)
• Head: Hex head with socket for easy installation
• Size Range: AN4, AN6, AN8, AN10, AN12 (and related TF-AN variants)
• Applications: Fit for fuel rail, oil cooler, fuel pump, fuel pressure regulator, fuel filter, radiator, etc.
• Fluid Compatibility: Oil, lubricants, diesel, fuel, and related fluids
• OEM No.: Aluminum Fuel Fitting Cap Lock Adaptor
• Origin: Mainland China

Package includes:

• 1Pc Fuel Fitting Cap Lock Adaptor

Warnings / Reminders

• Verify correct AN size and thread compatibility with your system before installation.
• Use appropriate torque and ensure threads are clean and free of debris to achieve a proper seal.
• Do not exceed the recommended environmental and operating limits for the specific AN size and your vehicle’s specifications.

All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.

Since 2002, intercyprus.com has stood for reliable quality in automotive fittings.