NPT Female Weld Bung 1/2in-14 Steel

The ALLSTAR PERFORMANCE NPT Female Weld Bung 1/2in-14 Steel is a precision-engineered weld-on port adapter designed for custom fuel system, coolant line, and fluid circuit installations in performance and race applications. This 1/2-inch NPT female weld bung provides a secure, leak-free threaded connection point on welded steel fuel cells, radiators, and reservoir tanks where permanent integration is required.

The 1/2 inch NPT (National Pipe Thread) female port accepts standard 1/2-inch NPT male fittings, hose adapters, and sensors commonly used in motorsport fuel system plumbing and engine bay fluid management. Steel construction with a natural finish withstands heat cycling and moderate corrosive environments typical of race car engine bays. The weld-on design—featuring a flat mounting face and reinforced bung collar—distributes load across the tank or component wall, minimizing stress concentration and reducing the risk of leakage at high operating temperatures and under fuel pressure cycles.

This bung is essential for builders fabricating custom fuel cells, installing auxiliary cooling systems, or integrating aftermarket fuel delivery components into race cars and high-performance vehicles. It is sold individually and provides a single threaded port; multiple bungs may be required for complex plumbing layouts with multiple sensor or line connections.

Verify NPT thread compatibility and pressure rating of all connected fittings before installation. Proper welding technique and post-weld inspection are critical to system integrity and safety.