• 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 found in a row on the side or top of your car's engine. When you first see one, your Spark Plug may look like a long, oddly-shaped screw. In reality, this essential component plays a significant role in your car's driving ability. If a plug is neglected for so long that it no longer functions properly, your vehicle probably won't run.

The spark plugs in your INFINITI help your engine turn standard fuel into useable energy so that you can enjoy a smooth start and journey in your INFINITI. So how does this happen? Your Spark Plug generates an intense electrical spark. This spark then ignites the extremely combustible mixture of fuel and air in your vehicle's combustion chamber, generating the energy needed to move your vehicle down the street. Without a great working Spark Plug, the amount of power your vehicle needs to ignite your fuel and convert it into working energy lessens, which can result in critical issues.

Your Spark Plug needs periodic servicing, just like filters, motor oil, and tires on your INFINITI. If they are neglected for too long, you may notice several issues. Signs of an impaired Spark Plug include engine misfiring and knocking, reduced fuel economy, difficulty starting your INFINITI, random shut-offs, and acceleration issues. All of these problems can hinder your car from starting and driving efficiently. A damaged Spark Plug can also compromise many other engine components.

When installing a new Spark Plug, it’s best to consult your INFINITI owner's manual for manufacturer recommended replacement periods. Most Spark Plug service periods are required every 30,000 miles.

Installing your Spark Plug yourself is possible but may be a bit difficult since you might need to disassemble ignition cables, plug wires, coils and other essential parts. We recommend leaving this work to mechanics and technicians. But if you do choose to do the installation yourself, refer to your car owner's manual, ensure that your vehicle is parked on a flat surface, and unplug your car battery before starting.

Your INFINITI requires a certain Spark Plug created with proper material(s). Give your INFINITI the care it deserves by replacing an impaired Spark Plug with genuine OEM parts from INFINITI Parts.

This Spark Plug, part 22401ZE01B, is compatible with INFINITI QX56 2006-2010. Consult the What This Fits tab for more information on fitment.

Fits M45 (2006 - 2010)