Metric Port Plug M18 x 1.5

The Metric Port Plug M18 x 1.5 is a precision-engineered port closure designed for custom fluid systems, cooling circuits, and performance engine builds where metric threading is standard. Built for users who demand reliability in high-temperature and high-pressure environments, this plug seals unused metric ports on manifolds, blocks, and aftermarket components without compromise. Whether you're assembling a competition engine, custom hydraulic system, or tactical vehicle platform, a proper metric port plug prevents coolant loss, oil seepage, and contamination—critical factors in field reliability.

Manufactured to ISO metric specifications, the M18 x 1.5 thread pitch ensures compatibility with OEM and aftermarket metric-threaded ports across European and modern tactical platforms. The compact 0.75-inch hex head provides secure installation using standard metric wrenches, while the durable construction resists vibration loosening and thermal cycling—essential in mobile operations and engine compartments subject to shock and temperature extremes. Weighing just 0.02 lbs, this plug adds negligible mass while delivering the sealing integrity demanded by precision fluid systems.

Ideal for mechanics, vehicle builders, and military equipment specialists working with European-sourced components or metric-standard engine blocks, the Metric Port Plug M18 x 1.5 is a dependable consumable for custom cooling, lubrication, and fluid routing applications. Installation is straightforward: thread directly into any M18 x 1.5 port until seated, using appropriate torque for your system's operating pressure. Stock this plug for maintenance kits, build projects, or field repair scenarios where sealed ports are non-negotiable.