Q: What difference does iridium spark plugs really make?

asked by on

What is the difference mechanically from using an iridium tipped plug versus a non iridium tip?

The spark plug gap on a spark plug is where the spark jump across the electrodes. The spark will melt the metal electrodes part of the spark plug where the spark jumps. When copper is used on the electrodes the spark will melt parts over about 30,000 miles before they will need to be changed again. If Iridium is used the precious metal is harder than copper and will withstand the high temperature of the spark on the electrodes. They will wear at a much slower rate and will last over 100,000 miles with little to no wear.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. What difference does iridium spark plugs really make?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Car misfires then goes to limp mode.

When the vehicle goes into limp mode when the engine misfires, the computer is shutting down the electronics to the transmission to prevent damage to the catalytic converter as the fuel condition is either too lean or too rich. Check...

Q: It seems like the engine isn't receiving fuel properly.

Hey there. It is possible that there is a weak fuel pump issue, but there are several possible problems that can cause an engine to misfire. There could be a faulty ignition coil, a bad fuel injector, clogged fuel filter,...

Q: Q: Car starts and then stalls.

The Check Engine Light means there are faults stored in the engine computer's memory. Reading out these codes and then correcting the causes for these fault codes would be the first step to getting the engine to run correctly. The...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...