ACDelco GM Original Equipment 41-156 Iridium Spark PlugOnline now

Iridium is the latest in spark plug technology and is an exact replacement for vehiclesÆ original componentsá

Iridium composition provides a high melting point and great strength, helps to provide excellent wear resistance and durability

Iridium offers excellent engine idle stability, reliable cold starting, quick acceleration and smooth performance

Three 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 electronics

Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional

ACDelco GM Original Equipment parts are designed, engineered and tested to rigorous standards, and are backed by General Motors.

GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle

GM regularly updates production and service part designs to integrate new materials and technologies