"ACDelco GM Original Equipment Iridium Spark Plugs are designed, engineered, and tested to rigorous standards, and are backed by General Motors. When your vehicle struggles with hard starting, rough idling, or engine misfires, replacing worn ignition components can restore smooth acceleration and consistent power. Today's advanced engines demand precise ignition timing, efficient fuel combustion, and consistent power delivery across thousands of firing cyclesѡnd the spark plug stands as the critical component that makes it all possible. Engineered with a core that helps provide great heat transfer and optimize durability, along with a coating that helps reduce corrosion, this part is validated to deliver reliable performance under demanding conditions. By supporting proper timing and working seamlessly with your ignition coil, it prevents hesitation when pressing the gas pedal and plays a vital role in your vehicle emission controls. Whether you are navigating stop-and-go city traffic or taking long highway road trips, a fresh spark ensures reliable cold starts and helps maintain optimal fuel economy. The iridium technology provides outstanding suppression characteristics that deliver reliable performance with its specialized corrosion resistent coating. ACDelco GM Original Equipment parts are the true OE parts installed during the production or validated by General Motors for GM vehicles."

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• Built to handle the demands of stop-and-go city traffic
• Reliable ignition for daily commuting in all weather conditions
• Provides consistent performance during long highway road trips
• Supports the entire ignition system for proper timing
• Ignites the air and fuel mixture in the combustion chamber
• Delivers the spark needed to start your engine
• Features specialized corrosion resistant coating to help protect your replacement spark plugs
• "GM engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle"
• "Original equipment parts are designed to work with your GM vehicle safety systems -- aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type"