• 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

The spark plugs within your INFINITI are located in a line on the side or top of your engine. At first glance, a Spark Plug may appear to be a big, bizarre-looking screw. However, it plays a special part in your vehicle's ability to function. If any Spark Plug becomes so damaged that it no longer functions efficiently, your car may not start or run.

Spark plugs help your engine convert fuel into working energy, enabling you to drive your INFINITI. To do this, your Spark Plug generates an electrical spark, igniting the highly combustible fuel and air mixture in your INFINITI's combustion chamber, creating the energy needed to power your INFINITI as it drives down the road. With an impaired Spark Plug, the amount of force or power your vehicle needs to ignite your fuel and convert it into actionable energy lessens, which can lead to some pretty serious concerns.

A Spark Plug needs periodic servicing, just like filters, motor oil, and tires on your car. If they are neglected for too long, you may begin to notice several signs and symptoms. Signs of an old or worn Spark Plug include misfiring of the engine and knocking decreased fuel efficiency, difficulty starting your INFINITI, spontaneous shut-offs, and acceleration issues. All of these troubles can keep your INFINITI from driving and starting smoothly. A damaged Spark Plug can also cause potential issues with various other engine components.

When it comes to replacing your Spark Plug, it's best to read over your INFINITI owner's manual for recommended replacement periods. However, most Spark Plug service intervals are suggested every 30,000 miles.

Installing your Spark Plug on your own isn't impossible but may be slightly difficult since you might need to detach and remove ignition cables, plug wires, coils and other essential parts. We recommend leaving this job to INFINITI experienced professionals. But if you do opt for doing the repairs on your own, consult your car owner's manual, ensure that your vehicle is parked on a flat surface, and disconnect the battery before starting this process.

Each vehicle type requires a particular Spark Plug created with certain materials. Provide your engine with the care it deserves by replacing an impaired Spark Plug with OEM components from INFINITI Parts.

This Spark Plug 224015M016 fits INFINITI FX35 2003-2008, INFINITI FX45 2003-2008, INFINITI G35 2003-2007, INFINITI I35 2002-2004, INFINITI M35 2006-2010, INFINITI M45 2003-2010, INFINITI Q45 2002-2006, INFINITI QX4 2001-2003, or INFINITI QX56 2004-2006. Click on the What This Fits tab for more information on fitment.

Fits G35 (2003 - 2007)