Specifically calibrated for 2014 GMC Sierra 1500 powertrains, this iridium spark plug combines advanced metallurgy with precision engineering for dependable ignition performance. The iridium-tipped electrode withstands extreme combustion temperatures while resisting electrode gap erosion, extending service life significantly beyond conventional plugs. Designed to work seamlessly with your Sierra's engine control systems, it promotes efficient fuel combustion and maintains optimal spark timing under all operating conditions. This direct-fit component meets factory specifications, ensuring reliable cold-weather starting and consistent performance throughout the year with minimal maintenance requirements.