Podavelle 16AN Weld-On Bung Adapter Pack of 2 — 6061-T6 Aluminum CNC, 37° AN Seal

These weld-on adapters offer a robust, lightweight solution when you need a dependable threaded feed point for fuel, oil, coolant, or air lines. Built from aircraft-grade 6061-T6 aluminum and finished with precise CNC machining, each bung presents a wide inlet and deep taper to help maintain flow as fluid leaves the tank. Sold as a pair, they are intended for professional welding into custom tanks, pans, radiators, valve covers, fuel cells, and other fabricated components where a secure AN port is required.

How do these bungs affect fluid flow from a tank?

The Podavelle design prioritizes smooth flow by combining a wide inlet and a pronounced internal taper. This reduces turbulence at the exit point and helps the attached AN line draw fluid more efficiently. The 37° AN sealing angle also ensures a reliable metal-to-metal seat with compatible fittings.

• Wide inlet and deep taper reduce flow restriction and turbulence.
• 37° AN angle provides a full metal seal with AN hoses and adapters.
• Direct weld mount minimizes leaks common with threaded inserts or clamp systems.

What materials and dimensions should I expect?

Each bung is CNC-machined from 6061-T6 aluminum, a common choice for strength, corrosion resistance, and light weight. The thread size is 16AN (1-5/16 x 12 UNF) male, compatible with standard 16AN female fittings. The pack contains two identical weld-on bungs for dual installations or backup use.

• Material: 6061-T6 aluminum — lightweight and durable.
• Thread: 16AN / 1-5/16x12UNF male standard.
• Quantity: Pack of 2, suitable for paired systems or spares.

Can I use these for fuel, oil, coolant, or air applications?

Yes — the bungs are suitable for a wide range of liquids and gases, including fuel, oil, water/coolant, and compressed air. Because they must be welded into place, they form a leak-resistant port when installed correctly. Avoid using them in applications that require non-metallic seals or where welding would damage the tank material.

• Compatible with fuel cells, oil pans, radiators, and catch tanks.
• Not a screw-in or adhesive-mounted option — welding required.
• Works with standard 16AN hoses and fittings for fluid transfer.

What installation and safety points should I know?

Professional welding is strongly recommended to ensure a structurally sound, leak-free joint and to preserve threaded integrity. The product ships without instructions and is intended for fabricators or experienced technicians comfortable with welding aluminum. Use appropriate safety gear and follow local codes for fuel and pressure systems.

• Must be welded into place — no installation hardware included.
• Professional installation reduces risk of leaks and structural failure.
• Inspect fit and thread engagement with mating AN fittings before final welding.

Who is this for: These Podavelle 16AN weld-on bungs are aimed at hobbyist fabricators, race and performance shops, custom tank builders, and anyone modifying oil pans, fuel cells, radiators, valve covers, or dry-sump systems who needs a reliable AN port. If you plan to integrate standard 16AN plumbing into custom metalwork and have welding capability or access to a professional welder, this pack of two provides strong, lightweight, and flow-optimized connections for a variety of fluid systems.