Mercedes-Benz of Stevens Creek
Cart

Cart is Empty

Mercedes-Benz of Stevens Creek

Mercedes-Benz Spark Plugs And Glow Plugs

Mercedes-Benz® Spark Plugs And Glow Plugs 101

Your Mercedes-Benz was purpose-built to deliver an engaging driving experience. However, without the spark plugs -- or glow plugs, depending on the fuel that feeds combustion -- it would be little more than an attractive piece of art. That's because the plugs generate the initial flash that your ignition uses to kindle the mixture of air and fuel that's contained in your engine's combustion chamber.

How Mercedes-Benz Spark Plugs And Glow Plugs Work

It starts with the spark plugs firing an electric arc across a gap between two leads. Those gaps are precisely calibrated to deliver the ideal sparking that's required to burn the mist of fuel and air.

If your Mercedes-Benz model runs on diesel fuel, though, it has glow plugs instead of spark plugs. These feature a heating element in their tip. That element ignites the fuel mist that's sprayed into the engine cylinder.

How To Spot Spark Plug And Glow Plug Issues

Eventually, though, the plugs will start to go bad. Perhaps they've grown corroded, or the gap between leads has widened too far to produce an effective spark. Signs of trouble include:

  • Engine misfires
  • Difficulty starting your vehicle
  • The engine idles rougher than normal
  • The "Check Engine" light comes on -- though this is a common alert for many issues, so you'll want to connect a code reader to determine the cause

You Can Trust Genuine Mercedes-Benz Spark Plugs And Glow Plugs

If you're not experiencing any of these symptoms, check your owner's manual for your recommended maintenance schedule. Replacing the old spark plugs before they go beyond their rated mileage helps to ward off serious engine trouble. Your manufacturer makes the only spark plugs that are guaranteed to be compatible with your model's engine, ensuring the performance you want. Buy now!

No results found. Here are some helpful search tips:

  • Search by a part name. Example: water pump.
  • Be less specific. Example: brake instead of ceramic brake.
  • Remove information such as make, year or model.
  • Can't find the part you are looking for? Contact us and we'll find it for you!


Mercedes-Benz Spark Plugs And Glow Plugs

No results found. Here are some helpful search tips:

  • Search by a part name. Example: water pump.
  • Be less specific. Example: brake instead of ceramic brake.
  • Remove information such as make, year or model.
  • Can't find the part you are looking for? Contact us and we'll find it for you!