#3 Male to 1/8in NPT Aluminum Gauge Fitting

The #3 Male to 1/8in NPT Aluminum Gauge Fitting (XRP795003) is a precision adapter engineered for serious marine applications where reliable fluid system connections are non-negotiable. Whether you're monitoring fuel pressure, oil temperature, or hydraulic systems on your vessel, this straight-run adapter bridges AN (Army-Navy) and NPT (National Pipe Taper) standards seamlessly. Built by XRP-XTREME RACING PRODUCTS—a brand trusted in high-performance marine and automotive environments—this fitting handles the vibration, temperature swings, and corrosive saltwater exposure that recreational and commercial boaters face daily.

Constructed from aluminum and finished in black anodized coating, the gauge fitting offers lightweight durability while resisting oxidation and corrosion in harsh marine environments. The straight configuration eliminates unnecessary bends that can trap air or create flow restrictions in gauge lines, ensuring accurate pressure and temperature readings at the helm. The #3 AN male end connects to standard -3 AN hose or adapter assemblies, while the 1/8 inch NPT female port accommodates most marine gauge sensors and transducers without adapters. Black anodized aluminum reduces weight compared to brass alternatives while maintaining structural integrity under sustained pressure cycling common in extended offshore runs.

Boaters installing new gauge systems, upgrading aging fuel or hydraulic monitoring lines, or retrofitting custom instrumentation panels will appreciate the compact 2.75-inch length and straightforward installation geometry. This adapter is ideal for applications where space is tight—engine compartments, transom-mounted systems, or integrated gauge clusters—and where clean, unobstructed fluid pathways are essential for accurate readings. Installation requires standard AN wrenching tools and basic plumbing knowledge; apply appropriate thread sealant (PTFE tape or marine-grade pipe dope) to NPT connections to prevent weeping under pressure. For serious boaters who demand precision in their vessel's vital signs, the XRP #3 Male to 1/8in NPT Aluminum Gauge Fitting delivers OEM-grade reliability at a price that respects your maintenance budget.