2AN Weld-On 1/8NPT Bung Female Clear

The 2AN Weld-On 1/8NPT Bung Female Clear is a precision fluid system component engineered for custom automotive cooling, fuel, and brake line routing in performance builds. As a mechanic fabricating forced-induction or high-output systems, you'll recognize this fitting as essential infrastructure for remote pressure monitoring, auxiliary cooling circuits, and gauge integration. The weld-on bung design allows permanent, leak-free installation directly onto custom aluminum or steel manifolds, tanks, and radiator cores—eliminating reliance on threaded bosses that may not exist in your application.

This fitting accepts a female 1/8" NPT (National Pipe Thread) connection, enabling sealed attachment of male NPT-terminated hoses, sensors, and quick-disconnects without tape or sealant breakout. The weld flange provides a robust heat-dissipation base and full-penetration surface contact, critical for high-vibration engine bays and transient thermal cycling common in turbocharged or supercharged platforms. Clear identification of the female port ensures correct orientation during fabrication, reducing assembly errors when integrating pressure relief valves, oil cooler lines, or transmission cooling loops into bespoke manifold designs.

This component serves builders developing LS swaps, twin-turbo street engines, and dedicated race platforms where OEM port locations don't align with modern cooling or monitoring requirements. Its lightweight construction (0.08 lbs) and compact footprint integrate seamlessly into tight engine compartments without adding unnecessary mass to performance-critical builds. Installation requires basic tig or mig welding proficiency and proper fixture clamping to ensure perpendicular bung orientation—essential for hose routing clearance and future serviceability of connected components.