Spark Plug.

• 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 can be seen in a row along either the side or top of your car's engine. When you first see it, a Spark Plug may appear to be a big, oddly-shaped screw. However, your Spark Plug plays a vital role in your car's ability to function. If any Spark Plug becomes so worn that it no longer functions correctly, your car probably won't run.

Spark plugs and the engine work to transform fuel into useable energy, enabling you to drive your INFINITI. To do this, your Spark Plug generates an electrical spark, igniting the highly volatile combination of air and fuel in your INFINITI's combustion chamber, creating more than enough energy to move your vehicle down the road. With an impaired Spark Plug, the power needed to spark your fuel and turn it into working energy lessens, which can result in some pretty serious issues.

A Spark Plug needs periodic servicing and maintenance, much like filters and tires on your vehicle. If they not serviced routinely, you may begin to notice several issues. Possible signs of an old or worn Spark Plug may involve engine misfiring and knocking, reduced fuel efficiency, problems with starting your vehicle, spontaneous shut-offs, and difficulty accelerating. All of these troubles can stop your vehicle from driving and starting smoothly. An old Spark Plug can also compromise various other engine parts.

When replacing a Spark Plug, we suggest that you read over your car owner's manual for scheduled replacement recommendations. Many Spark Plug service periods are suggested at 30,000 miles.

Installing your Spark Plug at home can be done but may be a bit difficult since it may be required that you disassemble car parts such as ignition cables, coils, wire plugs, and other vital INFINITI components. In effect, it's best to leave this work to mechanics and technicians. Should you opt for doing the installation at home, refer to your INFINITI owner's manual, confirm that your INFINITI is parked on a smooth surface, and disconnect your battery before starting this process.

Each vehicle type needs a specific Spark Plug created with certain materials. Give your INFINITI what it needs to perform by exchanging an impaired Spark Plug with OEM parts from INFINITI Parts.

This Spark Plug 224011P114 fits INFINITI I30 or INFINITI Q45. Consult the What This Fits tab for more information on fitment.