Iridium Tip Spark Plug f150 headlights The six-position chip offers adjustable

The six-position chip offers adjustable horsepower

Edge performance tuning

DOT APPROVED: Make no mistake

Vehicle cabs

Nothing could be further from the truth

Iridium Tip Spark Plug f150 headlights The six-position chip offers adjustableMSD iridium spark plugs will fire up your engine for optimum performance. These plugs have been engineered from the inside out for efficient combustion to create the most power possible for your setup. MSD's proprietary design features center tips made from iridium a super hard material that promotes the best spark as well as increased resilience. They also feature copper center cores, special ceramic material to enhance the dielectric strength of the