• Helps your engine convert fuel into useable energy
• Engine misfires, poor fuel efficiency, difficulty accelerating, and random shut offs are signs of a worn spark plug
• Replacement is best done by a professional technician

Your INFINITI spark plugs are situated in a row along the top or side of your engine. When you first see one, a Spark Plug looks somewhat like a long, bizarre-looking screw. However, your Spark Plug plays a critical role in your vehicle's ability to function. If any Spark Plug becomes so damaged that it stops working properly, your INFINITI may no longer run.

Your INFINITI spark plugs and the engine work to transform standard fuel into actionable energy so that you're able to enjoy a smooth start and journey in your INFINITI. During this process, your Spark Plug triggers an electrical spark, igniting the extremely combustible combination of air and fuel in your combustion chamber, creating enough energy to get your car moving down the road. Without a properly functioning Spark Plug, the amount of force or power your vehicle needs to ignite the fuel and turn it into energy diminishes, which can lead to significant concerns.

A Spark Plug needs periodic servicing, similar to filters and tires on your vehicle. If these components not serviced routinely, you may notice a few signs and symptoms. Possible signs of an old or worn Spark Plug may involve engine misfiring and knocking, reduced fuel economy, problems with starting your vehicle, spontaneous shut-offs, and problems with accelerating. Each of these problems can hinder your car from working properly. Neglected spark plugs can also cause potential issues with various other engine components.

When installing a new Spark Plug, it's best to consult your owner's manual for scheduled replacement recommendations. Many Spark Plug service guidelines are required at 30,000 miles.

Replacing a Spark Plug at home can be done but can prove a little challenging since you might need to remove or disconnect car parts such as ignition cables, coils, wire plugs, and other essential parts. Because of this, we recommend leaving this job to authorized INFINITI mechanics and technicians. However, if you opt for doing the installation on your own, read over your car owner's manual, ensure that your INFINITI is parked on a smooth surface, and disengage the battery before beginning the installation.

Each vehicle type demands a certain Spark Plug designed with the appropriate materials. Give your INFINITI what's needed by trading a worn out Spark Plug with OEM components from INFINITI Parts.

This Spark Plug 224011P115 fits INFINITI G20 1991-2002, INFINITI I30 1996-2001, INFINITI J30 1993-1997, INFINITI M30 1990-1992, or INFINITI Q45 1990-2001. Consult the What This Fits tab for additional fitment info.