NGK G-Power TR-55GP Spark Plugs (.055 GAP) – GM LSx V8 Applications (Set of 8) – NGK-3403-8

NGK G-Power Spark Plugs -.055 Plug Gap What GAP to use? Prior to 2005 GM used .055 GAP (this size)�spark plugs on all LSx motors. Starting in 2005, they switched to .040 GAP plugs�to provide a better idle�when things like cheap gas are�encountered. Either�a .060, or .040 GAP plug will work in any LSx motor with the smaller�GAP being best for daily driven, mildly�modded cars.�� This tip is an upgrade over the standard LSx style�plugs with better design and performance qualities. Improved Fuel Efficiency, Lower Emissions, Quicker Starts. Fine platinum tip reduces required voltage Extremely durable under high heat �Trivalent Metal Plating� has superior anti-corrosion and anti-seizing properties Faster starts and quicker acceleration Better fuel economy and lower emissions Best platinum spark plug at an economical cost Fits most GM LSX (LS1, LS2, LS6, etc) applications.