-16 AN to 3/4in Pipe Alum. Adapter

The -16 AN to 3/4in Pipe Aluminum Adapter from AEROQUIP is an essential fluid transfer component for high-performance fuel, oil, and coolant systems in automotive and motorsport applications. This adapter bridges the gap between AN (Army-Navy) metric hose fittings and standard pipe thread connections, making it indispensable for engine builders, turbocharged system installations, and custom fuel rail setups. Whether you're upgrading a street performance build or fabricating a competition engine platform, this adapter ensures reliable flow routing without compromise.

Constructed from lightweight aluminum alloy, the -16 AN to 3/4in Pipe Adapter combines durability with minimal weight penalty—critical in applications where every fraction of a pound matters. The -16 AN designation (1-inch outer diameter tubing) delivers adequate flow capacity for moderate to high-displacement engines, while the 3/4-inch NPT (National Pipe Thread) male connection threads securely into block ports, manifolds, and aftermarket fuel distribution blocks. AEROQUIP's engineering ensures precise dimensional tolerances and leak-free sealing when paired with proper Teflon tape or thread sealant, maintaining system integrity under sustained boost or high fuel pressure scenarios common in turbocharged and supercharged powerplants.

Mechanics and engine builders favor this adapter for custom fuel system fabrication, oil cooler plumbing, and coolant bypass configurations on LS, small-block Chevy, Ford modular, and import platforms requiring metric-to-pipe transitions. Its compact 3.5-inch length and minimal weight profile (0.18 lbs) fit tight engine bay layouts without requiring custom bracketry. Compatibility spans both carbureted and fuel-injected systems; simply verify your hose and port thread sizes before installation. This is a direct replacement specification for stock or aftermarket fuel rails, and a must-have standby for any serious fabrication toolbox.