OEM Mopar Spark Plugs

Your car, truck, SUV, or van needs ignition to start at your command. That only comes about thanks to your spark plugs, which deliver that initial flash that burns the air-and-fuel mixture inside the engine.

How Spark Plugs Work

The way it works is simple. The spark plugs send an arc of electricity across a gap between their two leads. Those gaps are precisely set in order to generate the ideal sparking required for ignition.

If you drive a model with a diesel engine, though, your vehicle may use glowplugs instead of spark plugs. These feature a heating element in their tip that ignites the fuel mist sprayed into the engine cylinder.

In time, the spark from your plugs can begin to weaken. They may have become corroded, or perhaps the gap has grown too wide to produce an effective spark. That can cause performance issues.

How to Recognize Bad Spark Plugs

Signs of impending failure include:

• Uneven idling
• Engine misfires
• Difficulty starting your vehicle
• The "Check Engine" dashboard light comes on

Genuine OEM Spark Plugs Are Your Best Choice

If you aren't having trouble, check your owner's manual to determine your recommended maintenance schedule. When you do need to replace your spark plugs, using the authentic ones made by your manufacturer is the right way to go. They're compatible with your model, ensuring the fit and performance you want. Find your next set right here in our online Mopar auto parts store. Buy now and we'll ship your order straight to your home!