-20an Male Aluminum Weld-In Fitting

The MEZIERE -20AN Male Aluminum Weld-In Fitting is a precision hydraulic adapter engineered for high-performance cooling and fuel system applications in race cars, hot rods, and custom-built vehicles. This weld-on bung provides a permanent, leak-proof connection point for lines running to radiators, oil coolers, transmission coolers, and fuel system components. Constructed from aluminum in natural finish, the fitting delivers the lightweight performance and corrosion resistance that professional builders and enthusiasts demand in motorsports environments.

Designed to AN (Army-Navy) -20 specifications, this fitting accepts -20 AN hose and adapters with standard male threads. The weld-in design requires permanent installation via welding to aluminum tanks, manifolds, or custom-fabricated components, ensuring a solid structural bond that eliminates vibration-induced loosening common in threaded adapters. At just 0.12 lbs and compact dimensions (3.15 x 1.85 x 3.5 inches), the fitting minimizes weight while maintaining full flow integrity. The natural aluminum finish allows integration into bare-metal or anodized systems without additional finishing.

This fitting is essential for builders constructing custom cooling circuits, fuel delivery systems, or hydraulic applications in race cars, street rods, and off-road vehicles. It serves as a permanent solution where reliability and weight savings matter, particularly in competitive motorsports where system vibration and repeated thermal cycling demand fixed connections. MEZIERE fittings are recognized in the racing community for precision manufacturing and dimensional accuracy to specification.

AN fittings follow standardized thread and bore specifications, allowing seamless integration with AN hose assemblies and other components in your system. Aluminum construction balances strength with light weight, a critical advantage in vehicles where unsprung or total weight reduction directly affects performance and handling.