Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original componentsáIridium composition provides a high melting point and great strength, helps to provide excellent wear resistance and durabilityIridium offers excellent engine idle stability, reliable cold starting, quick acceleration and smooth performanceThree Piece Fired in Suppressor seal meters spark energy for long electrode life, helps prevent combustion leakage and helps block radio frequencies that can affect vehicle electronicsSome ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco ProfessionalACDelco GM Original Equipment parts are designed, engineered and tested to rigorous standards, and are backed by General MotorsGM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicleGM regularly updates production and service part designs to integrate new materials and technologies
