OEM Spark Plugs

What Spark Plugs Do

Spark plugs are essential to the internal combustion engine of your vehicle. They receive an electric current from the ignition system and generate a spark that ignites the compressed air-fuel mixture in the engine’s combustion chamber. This powers the engine.

How Many Spark Plugs in a Vehicle

The number of spark plugs in a vehicle depends on the number of cylinders in the engine. Four-cylinder engines have four spark plugs—one for each cylinder. A six-cylinder engine has six spark plugs, etc. High-performance or larger engines like V10 or V12 engines may have a greater number of spark plugs.

When to Replace Spark Plugs

There are a few signs that can indicate if a spark plug needs replaced.

• Misfiring engine or difficulty starting
• Poor fuel efficiency
• Rough idling
• Engine performance issues
• Visiual wear or damage

Find OEM Spark Plugs for Your Vehicle

Big 3 Auto Parts sells spark plugs online for Ford, GM, and Mopar vehicles. Use the filter to the left to narrow down your search to find the spark plugs you need for your vehicle year, make, and model. Order today to take advantage of our nationwide shipping and in-stock parts arrival in as little as 24 hours.