Metric Port Plug M14 x 1.5

The Metric Port Plug M14 x 1.5 from VIBRANT PERFORMANCE is an essential component for engine builders, performance tuners, and mechanics working with metric-threaded ports common on modern and imported vehicles. Whether you're sealing off unused coolant ports, oil passages, or vacuum lines during an engine rebuild or modification, this metric plug provides a reliable solution for blocking metric 14mm applications. Port plugs are critical when reconfiguring cooling systems, installing aftermarket thermostats, or adapting imported engines to custom engine bays where OEM port configurations don't match your setup.

Engineered with precision threading and a robust design, the M14 x 1.5 metric port plug features the exact ISO metric specifications required for a leak-free seal in metric engine blocks and manifolds. The 1.5mm pitch ensures compatibility with standard metric cooling and lubrication ports found on Japanese, European, and other international engine platforms. VIBRANT PERFORMANCE manufactures this plug to tight tolerances, allowing proper seating without over-tightening, which is crucial when working with aluminum or cast iron engine surfaces prone to stripping. The compact 3.54-inch length and 0.75-inch diameter make installation straightforward in tight engine compartment spaces, while the minimal 0.02 lb weight adds virtually no burden to your engine assembly.

Mechanics and engine builders tackling turbo conversions, LS swaps into metric-engine vehicles, cooling system upgrades, or complete engine refreshes will find this plug indispensable for blocking off redundant or rerouted cooling passages. It's equally valuable when eliminating vacuum-operated components during engine bay simplification or emissions system modifications. Installation requires only a wrench or socket sized for metric bolt heads—simply thread the plug into the M14 x 1.5 port and hand-tighten before final torque application per your engine manufacturer's specifications. Always use thread sealant (Teflon tape or anaerobic sealant) on coolant or oil passages to prevent weeping, ensuring a dry, professional engine bay finish.