NPT Female Weld Bung 1in-11-1/2 Aluminum

The NPT Female Weld Bung 1in-11-1/2 Aluminum from ALLSTAR PERFORMANCE is an essential component for custom fuel system fabrication, transmission cooler lines, and engine bay plumbing modifications. Built for serious fabricators and performance builders, this weld bung serves as a threaded port that allows you to integrate gauges, sensors, and fluid lines into custom-built tanks, manifolds, and hard piping runs. Whether you're building a fuel surge tank for a high-horsepower engine, installing a transmission temperature monitor, or designing a custom cooling circuit, this aluminum bung provides a reliable threaded connection point where none existed before.

Machined from lightweight aluminum, the NPT Female Weld Bung 1in-11-1/2 features a female NPT (National Pipe Taper) thread that accepts standard 1-inch NPT male fittings, adapters, and port connectors. The weld flange design allows for TIG or MIG welding directly into steel or aluminum tanks and manifolds, creating a permanent, leak-free junction that won't vibrate loose under extreme conditions. The 1-11-1/2 designation indicates the 1-inch NPT thread size with a 11.5-inch overall length, giving ample material for secure welding while the flange diameter provides adequate surface area for heat dissipation and structural integrity during the welding process.

This bung is ideal for custom fuel system builders, racing teams, and DIY fabricators constructing bespoke tanks or modifying existing fuel delivery and cooling systems. It's commonly used in street rod projects, circle track racing setups, and engine swaps where factory fuel cells or tanks require aftermarket gauge bungs or sensor ports. Compatibility spans any application requiring a welded NPT female port—from fuel pressure sensors and temperature senders to shutoff valves and distribution block connections. Proper TIG welding technique is recommended for aluminum-to-aluminum or steel applications to ensure a clean, strong bond without material degradation.