Spark Plugs

All About Spark Plugs

• What they do: ignite the fuel-to-air ratio in your vehicle's engine.
• Why they do it: the combustion is how the engine produces the power it runs on.
• How they work: it's a process, one aptly called spark ignition.
• How the process goes: it starts when your key turns in the ignition lock cylinder. The ignition switch triggers, and the car battery, starter motor, starter solenoid, and ignition coil begin generating electricity. The plugs' leads pick up that charge.
• What happens then: said combustion occurs, and the engine's pistons, the crankshaft, the alternator, and more start running.
• The symptoms of a bad one: there are several. Look for corroded and/or excessively wide leads, plug wear, breakage, worsening conductivity, hard starts, a reduction in fuel economy, engine misfires, rough idling, and trouble with acceleration.
• When they should be changed: 1. if you see the signs mentioned above; 2. when you run an engine inspection and its results recommend it; and/or 3. before they exceed the mileage limits suggested in your owner's manual. Before ordering new ones, however, be sure you get genuine.

Why Buy Genuine Mopar Spark Plugs

The brand designs and builds them specifically to fit your model, a fitment guarantee that the aftermarket can't always make.

Where to Order OEM Spark Plugs

From our auto parts store. We carry both regular and extended-life options made of everything from copper to platinum and iridium. Just be sure to browse our catalog by make, model, and year to find what's compatible. Buy online now, and we'll ship out ASAP, delivering right to your door.