These spark plugs are one of the brand's most technologically advanced spark plugs ever. With an iridium-enhanced 0.6 mm finewire design and proprietary platinum sidewire technology, these spark plugs provide better durability* and a more focuséd ignition for better overall ignitability** and optimum performance. Uséd in Nascar USA.
 
Iridium-enhanced platinum alloy 0.6mm finewire center electrode for improved ignitibility performance

Patented V-trimmed platinum sidewire technology resists wear
OE equivalent design is engineered for every engine to ensure the right plug for your vehicle
Designed for better overall durability with virtually no gap erosion for longer plug life
Attached motor seat gasket and terminal nut

Set of 6.