3/8in Female NPT Weld-on Bung Clear

The 3/8in Female NPT Weld-on Bung Clear from REDHORSE PERFORMANCE is a precision fluid-system component built for serious boaters and marine technicians who demand reliability in demanding saltwater and freshwater environments. Whether you're upgrading fuel systems, coolant lines, or hydraulic circuits on your vessel, this weld-on bung provides a clean, permanent installation point for sensors, fittings, or future port access. It's the kind of fitting that gets bolted down once and forgotten—until you're grateful it's there during a critical system check at sea.

Manufactured by REDHORSE PERFORMANCE, a brand trusted in performance fluid systems, this fitting features a female NPT (National Pipe Thread) connection designed to accept standard threaded adapters, sensors, or gauge ports. The clear construction allows visual inspection of fluid flow or pressure without dissassembly, a feature that pays dividends during troubleshooting runs offshore. The weld-on design ensures a permanent, vibration-resistant bond to your tank or manifold—no clamps, hose creep, or leakage typical of press-fit alternatives. At just 0.05 lbs and compact dimensions, it integrates seamlessly into tight engine compartments without adding dead weight.

Marine fabricators, performance boat builders, and restoration specialists rely on weld-on bungs to retrofit custom fuel, water, and hydraulic systems without compromising tank integrity. The 3/8-inch diameter suits mid-range circuit applications—larger than needle valves but sized for typical marine fluid-delivery networks. Installation requires basic welding capability and a stable work surface; the clear material helps you verify proper seating before full system pressurization. Compatible with any standard 3/8 NPT threaded accessory, from digital fuel-pressure gauges to block drain ports, this bung is a one-time investment in system longevity and diagnostics capability.