NGK Laser Iridium spark plugs offer the best combination of performance and longevity. Engineered specifically for OE applications, Laser Iridium spark plugs are tested to the highest standards to ensure quality and durability. Iridium tipped center electrode provides durability six times harder than platinum. NGKs high grade pure alumina ceramic and 98 percent pure copper core prevents the spark plug from overheating while providing reliable starts. Most Laser Iridium spark plugs feature a platinum pad on the ground electrode for even wear in distributorless ignition systems. NGK Laser Iridium spark plugs offer the best combination of performance and longevity. Actual OE or equivalent replacement spark plug. I/O - 2007 MERCRUISER

Pure alumina silicate ceramic insulator provides superior strength and better heat transfer
Trivalent metal plating for superior anti-corrosion and anti-seizing properties
RECOMMENDED USAGE: Best for vehicles with OE fine wire iridium alloy plugs
Copper core aids in heat removal
Triple seals prevent leakage

The NGK Laser Iridium Spark Plug (Part Number: 4214) offers an optimal balance of high performance and extended lifespan, engineered specifically for original equipment applications. Featuring an iridium-tipped center electrode, this spark plug provides durability that is six times greater than platinum, ensuring consistent sparks over time. Designed with high-grade pure alumina ceramic insulator, it effectively transfers heat and maintains structural integrity under demanding conditions. The 98% pure copper core further enhances heat removal, promoting reliable starts and efficient combustion.
This spark plug is built with a platinum pad on the ground electrode to ensure even wear, especially suitable for distributorless ignition systems. Trivalent metal plating offers superior resistance to corrosion and seizing, extending the service life of the component. The triple seals prevent leakage, maintaining optimal performance and protecting against contaminants. It is recommended for vehicles with OE fine wire iridium alloy plugs, making it a perfect replacement for OEM standards.
Ideal for marine engines like the 2007 Mercruiser, this spark plug combines advanced materials and engineering to deliver dependable ignition performance. Its design ensures superior heat resistance, preventing overheating while delivering consistent ignition for improved engine efficiency. Whether replacing worn-out plugs or upgrading for better durability, the NGK Laser Iridium spark plug provides a long-lasting solution with proven quality and performance.

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