-16 Welding Bung 1 5/16

The -16 Welding Bung 1 5/16 from XRP-Xtreme Racing Products is a purpose-built aluminum weld-on fitting designed for custom fuel system and fluid line installations in high-performance automotive applications. This bung serves as a sealed access point or mounting interface in race cars, modified street vehicles, and competition builds where reliability and precision matter. Whether you're fabricating a custom fuel cell, installing a surge tank, or routing fuel lines in a tight engine bay, this weld-on bung provides a secure, permanent connection point that won't vibrate loose or fail under pressure.

Manufactured from aluminum in natural finish, the -16 Welding Bung features a 1 5/16-inch body diameter and an AN female O-ring port configuration, making it compatible with standard -16 AN hydraulic and fuel line fittings. The weld-on design eliminates the need for threaded bosses or brackets—you simply tig or mig weld it directly to your tank, manifold, or custom fabrication. The O-ring sealing surface ensures a leak-free connection when mated with corresponding -16 AN male connectors, a critical requirement in fuel and coolant systems where pressure and vibration demand absolute integrity. Aluminum construction keeps weight minimal while providing corrosion resistance in typical automotive environments.

This bung is ideal for fabricators, race teams, and enthusiasts building custom fuel systems, surge tanks, catch cans, or radiator overflow circuits. Its compact 3.55 x 1.4 x 4.6-inch footprint allows integration into tight spaces without compromising aerodynamics or underhood layout. Welding directly to aluminum or steel tanks creates a permanent, pressure-rated assembly that outperforms bolt-on alternatives in extreme duty cycles. Installation requires basic TIG welding skills and post-weld testing to verify O-ring sealing—standard practice in any fuel system modification.