Enhance your vehicle’s performance with Ngk 91187 Iridium Ix Spark Plug. Designed for enthusiasts, it offers exceptional acceleration, fuel efficiency, and durability. Its tapered cut ground electrode improves starting and throttle response while the Iridium fine wire center electrode offers six times the durability of platinum. Upgrade to an NGK Ruthenium HX plug for even greater performance.PRODUCT DESCRIPTIONSOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat rangesIRIDIUM ALLOY CENTER ELECTRODE: Iridium’s density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency enginesTRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removalTAPERED CUT GROUND ELECTRODE: Reduced quenching design produces outstanding ignitability, improved acceleration, fuel efficiency and durabilityRECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugsSINGLE IRIDIUM TIP: Fine wire 0.6 millimeter iridium tip center electrode ensures high durability and a consistently stable spark
