Laser Iridium spark plugs are made by NGK for OEMs. They use a combination of iridium and platinum to increase efficiency and ...

Iridium spark plugs are more expensive, last far longer, and handle heat better than copper spark plugs -- but not all ...

The rate at which a spark plug wears out will vary depending on the make and model of the vehicle, the type of engine, driving conditions, and spark plug type. Engines with copper spark plugs ...

Iridium or platinum spark plugs -- which should you choose for your car? Here's how they compare when it comes to performance ...