NGK Spark Plug Stock # 6418

The NGK Spark Plug Stock # 6418 (BKR6EIX) is a premium iridium spark plug engineered for reliable ignition across a wide range of automotive applications. This single-unit spark plug features NGK's Iridium IX technology, delivering consistent performance in both standard and high-output engine configurations. The 14mm thread size and 0.749-inch reach specification ensure precise fitment in compatible engine heads, while the gasket seat design provides a secure seal that prevents compression leakage and maintains optimal combustion chamber pressure.

Iridium construction in spark plugs delivers several measurable advantages over conventional nickel electrodes. The iridium center electrode is significantly harder and more resistant to erosion, which extends service life and reduces misfires across extended intervals. The resistor-type design suppresses electromagnetic interference, making this spark plug suitable for vehicles with sensitive onboard diagnostics and radio frequency equipment. The gasket seat configuration is standard for modern engines requiring positive sealing without relying on taper fit alone, ensuring compatibility with precision-machined spark plug ports.

This NGK BKR6EIX spark plug is designed for engine rebuilds, maintenance replacements, and performance tuning applications where ignition reliability is critical. Users performing routine spark plug service, diagnostics after misfires, or complete engine tune-ups will find this component meets OEM specifications for numerous vehicle platforms. The compact 0.1-pound weight and standard dimensions make handling and installation straightforward, whether performing single-plug replacement or complete set changes across a multi-cylinder engine.