Allen Plugs NPT 1/16in 2pk

The Allen Plugs NPT 1/16in 2pk from ALLSTAR PERFORMANCE are precision-engineered aluminum fittings designed to seal and protect NPT (National Pipe Thread) ports in fuel systems, cooling circuits, and hydraulic applications. Available as a matched pair, these plugs are essential for blocking unused 1/16-inch NPT openings on engine blocks, manifolds, and aftermarket components where port closure is required. Engineers and fabricators rely on these fittings to prevent fluid leakage, contamination, and pressure loss in high-performance and custom engine builds.

Each plug features an Allen head design for secure, tool-assisted installation and removal, allowing controlled torque application without stripping. Constructed from aluminum and finished in black anodized coating, these fittings resist corrosion and oxidation while maintaining a professional appearance in engine bays. The anodized surface provides durability against fuel, coolant, and oil exposure—critical for longevity in demanding automotive and powersports environments. The 1/16-inch NPT thread size ensures compatibility with standard factory and aftermarket ports commonly found on cylinder heads, intake manifolds, and auxiliary cooling components.

This two-pack offering is ideal for engine builders, race shops, and restoration professionals who need to block multiple NPT ports during engine assembly or upgrade work. Installation requires only a standard Allen wrench and proper thread sealant (PTFE tape or pipe thread compound recommended) to ensure leak-free operation. Whether you're sealing unused ports on a modified engine block or completing a custom fuel system, the Allen Plugs NPT 1/16in 2pk deliver reliable, repeatable performance at a competitive price point.