Iridium Spark Plug - GM (12681663)

Upgrade your vehicle's ignition system with the Genuine GM OEM Iridium Spark Plug (MPN: 12681663), engineered to deliver superior performance and reliability across select GM vehicles. This premium iridium spark plug features advanced metallurgy that ensures exceptional durability, precise cold starts, and smooth acceleration while maintaining optimal engine idle stability. As an authentic General Motors replacement part, it meets factory specifications and provides the dependable ignition performance your vehicle was designed to achieve. - Genuine OEM iridium spark plug with laser-welded construction for precision fitment and reduced wear - Designed as a direct replacement for original GM spark plug components across select General Motors vehicles - High melting point iridium composition delivers excellent wear resistance, reliable starting, and consistent engine performance - Three-piece fired-in suppressor seal prevents combustion leakage and protects vehicle electronics from radio frequency interference - Factory-engineered and tested to rigorous GM standards with manufacturer backing