#16 Port Plug 1-5/16-12 Black

The #16 Port Plug 1-5/16-12 Black by FRAGOLA is a precision hydraulic or pneumatic port cap designed for high-performance fuel, coolant, and brake line systems in custom automotive builds. As an experienced mechanic and modifier, you'll recognize this component as essential when consolidating fuel distribution blocks, manifolds, or adapters during engine bay reorganization or turbocharger installations. This black anodized plug seals unused ports on your fuel rail or hydraulic block, preventing fluid loss, contamination, and pressure drop—critical factors when tuning carbureted or direct-injection platforms.

Manufactured to FRAGOLA's proven standards, the #16 port plug features a 1-5/16-12 thread specification that matches JIC and SAE adapter bosses commonly found on aluminum fuel blocks and distribution manifolds. The black finish provides corrosion resistance and clean aesthetics in engine bays while the compact 2.05 x 1.45 x 4-inch profile fits tight spaces near intake manifolds or fuel pressure regulators. Weighing only 0.14 lbs, this lightweight aluminum construction maintains system integrity without adding unnecessary mass—a consideration when optimizing fuel system flow dynamics on modified vehicles.

This plug suits builders converting fuel delivery systems from carburetors to EFI, consolidating multiple fuel distribution points, or simplifying port layouts during engine swaps. Whether you're sealing an unused port on a billet aluminum fuel block during LS engine installation or capping excess distribution bosses on a hydraulic suspension controller, the #16 Port Plug delivers reliable, leak-free performance. Compatible with any system using 1-5/16-12 threaded ports—including fuel rails, brake proportioning valves, and power steering manifolds—this is a small but indispensable detail for systems running boost or elevated fuel pressure.