GM Spark Plug 41-128

Iridium Spark Plug,  6.2L supercharged. 6.2L. with supercharger. Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original componentsIridium 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 electronicsIridium plugs are laser-welded which provides precision welds, reduces excess debris and wear rate, thus increasing durabilityThis GM Genuine part is designed, engineered and tested to rigorous standards, and are backed by General Motors