Chevrolet Performance 12642722 – Iridium Spark Plug for LT4 (AC-Delco 41-128)

ACDelco GM Original Equipment Iridium Spark Plugs

The ACDelco GM Original Equipment Iridium Spark Plugs represent the latest in spark plug technology, offering an exact replacement for your vehicle’s original components. Made with a durable iridium composition, these spark plugs provide a high melting point and exceptional strength, ensuring excellent wear resistance and long-lasting performance. Whether it’s for smoother engine idling, reliable cold starts, or quicker acceleration, these iridium spark plugs deliver optimal performance and stability.

Designed and validated by GM engineers, these parts meet rigorous standards and are made specifically for Chevrolet, Buick, GMC, or Cadillac vehicles. The three-piece fired-in suppressor seal helps extend electrode life, prevents combustion leakage, and blocks interference with your vehicle’s electronics, enhancing both performance and durability. With laser-welded construction, the iridium plugs offer precise welds that reduce debris and wear, further increasing their longevity.

• High-performance iridium composition: Provides a high melting point, great strength, and exceptional durability for long-lasting use.
• Improved engine performance: Offers excellent idle stability, reliable cold starting, quicker acceleration, and smooth performance.
• Three-piece suppressor seal: Meters spark energy, prevents combustion leakage, and blocks radio frequencies that could affect electronics.
• Laser-welded design: Ensures precision welds, reducing excess debris and wear rate, thus extending the plug’s lifespan.
• GM-certified: Designed, engineered, and tested to rigorous GM standards for specific use in Chevrolet, Buick, GMC, and Cadillac vehicles.

Vehicle Application

• 6th Gen Camaro
• C7 Corvette