NGK IMR9D-9H Laser Iridium Spark Plug with 12.7mm Thread - Part Number 6544

The ultimate in the evolution of spark plug technology and performance from the industry leader

The iridium electrode is 25% smaller than a platinum electrode, and it's just 1/4 the size of a conventional nickel electrode

Ultra-small diameter center electrode reduces voltage requirement and extends ignition system life

New metal shell plating has enhanced anticorrosion qualities

The NGK IMR9D-9H Laser Iridium Spark Plug offers advanced ignition performance with its durable construction and precise design. Engineered for reliable operation, this spark plug features a 12.7mm thread size compatible with a wide range of vehicles and engines. Its iridium electrode ensures long-lasting performance and improved ignitability, contributing to better fuel efficiency and reduced emissions. The high-quality materials used in this spark plug provide excellent resistance to wear and corrosion, extending service intervals and reducing maintenance costs. Designed for easy installation, the NGK 6544 spark plug delivers consistent spark performance even under demanding conditions, making it an excellent choice for both everyday driving and high-performance applications. Whether replacing worn-out plugs or upgrading your ignition system, this part guarantees dependable operation and optimal engine performance.

Features:

• Iridium center electrode for long service life and enhanced ignitability

• 12.7mm thread size for compatibility with many engine models

• Precise laser-welded construction for durability

• Designed for improved fuel efficiency and reduced emissions

• Corrosion and wear-resistant materials for extended service intervals