NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode's durability is six times harder than platinum. Iridium alloy's extremely high melting point is perfect for today's engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug. NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. BMW 2006-92; GM 2007-94; CHR/DOD/PLY 2005-95; HYU/KIA 2004-93; M-BENZ 2014-07; MINI 2008-02; MITS 2012-95; NIS 1996-90; SAAB 2011-03; SUB 2005-02; TOY 2004-90 2004-01; VW/AUDI 2009-86; VOL 2009-92, O/B - 2005-03 JOHNSON, 2004-01 SUZ

RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs
Trivalent metal plating for superior anti-corrosion and anti-seizing properties
Outstanding acceleration, high fuel efficiency and durability
Fine iridium tip ensures durable and consistent spark

The NGK Iridium IX Spark Plug (Part Number 6418) is engineered for high-performance vehicles and serious enthusiasts seeking exceptional ignition and efficiency. Designed with a tapered cut ground electrode, this spark plug ensures improved starting, smoother idling, and enhanced throttle response. Its fine iridium tip delivers consistent sparks for optimal engine performance, while the iridium alloy's high melting point withstands the demands of modern engines. With a durable construction that is six times harder than platinum, these plugs are built for longevity and reliable operation. The trivalent metal plating offers superior resistance to corrosion and seizing, making them suitable for modified or high-performance applications as an upgrade from OEM nickel alloy plugs. NGK's Iridium IX plugs are recommended for a wide range of vehicles, including BMW, GM, Honda, Toyota, VW, Audi, and more, fitting many models from the early 1990s through the 2010s. These plugs are sold in a convenient box of four, providing excellent value for maintenance or performance upgrades. Whether you're optimizing for acceleration, fuel economy, or durability, NGK Iridium IX spark plugs are a trusted choice for demanding drivers and vehicle enthusiasts alike.

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