Endura Union Fitting - #6 Male w/Pressure Port

The Russell Endura Union Fitting #6 Male with Pressure Port is a precision-engineered AN adapter designed for high-pressure hydraulic and fuel line systems. This straight-through fitting connects two 6 AN male ports while incorporating a 1/8 inch NPT gauge port, allowing real-time pressure monitoring during operation without interrupting primary flow. The aluminum construction with nickel-anodized finish provides corrosion resistance and durability across demanding environments, from motorsport fuel systems to high-performance cooling circuits.

Each fitting features a gauge adapter configuration that maintains structural integrity while enabling diagnostics. The nickel-anodized aluminum resists oxidation and corrosion in salt air and chemically aggressive environments, a critical consideration for offshore and marine applications. The 6 AN male threads provide reliable engagement with standard aftermarket hose fittings, and the integrated pressure port accepts standard 1/8 NPT gauge adapters—critical for monitoring fuel pressure in carbureted and fuel-injected engines, transmission cooler lines, and custom hydraulic systems where real-time data improves tuning and diagnostics.

This adapter suits fabricators, engine builders, and off-road enthusiasts who require pressure monitoring integration without sacrificing flow. Russell's reputation for precision adapters in motorsport applications makes this fitting a dependable choice for hot rod fuel systems, drag racing setups, and high-flow cooling applications. The compact dimensions and lightweight construction ensure minimal footprint in tight engine bay layouts while maintaining full flow capacity. Each unit is individually packaged to prevent damage during shipping and storage.

AN fittings have become the industry standard in high-performance automotive and marine hydraulic design due to their reusable nature, standardized thread profiles, and reliable sealing across a broad range of pressures. The addition of a gauge port transforms a simple connector into a diagnostic tool, enabling tuners to optimize fuel pressure curves and detect system failures before they become catastrophic.