Over time, the electrode on spark plugs wears away, causing a larger gap to form and resulting
in a weak spark. Excess carbon can also build up and negatively effect performance. Using
these factory spec plugs can help restore mileage and performance to your engine and smooth
out poor idle.
We also recommend changing spark plugs more often on vehicles with upgraded performance
software or turbochargers.
NGK iridium plugs represent the ultimate evolution of spark plug technology and performance.
The iridium center electrode is both stronger and harder than platinum. This allows NGK
engineers to design an ultra-fine (0.6mm)center electrode reducing the voltage requirement for
spark. This allows for a brighter, stronger spark from your existing ignition system. The ground
electrode has a tapered cut at the firing end which reduces quenching for better flame core
growth and increased ignitability. The combination of fine wire center electrode and tapered cut
ground will increase performance, improve acceleration, and fuel efficiency.
*Note: If you are replacing any part of your ignition system on a higher milage vehicle, it is also
best to replace other worn out and serviceable components such as your coil packs or plug wires.
Be sure to search under your model vehicle to see other replacement part options.