Spark Plug Iridium Power - Denso Iridium Power 5339

Spark Plug - Iridium Power | Gap .044

Spark plugs ignite the compressed air/fuel mixture in each cylinder, and their condition directly affects combustion efficiency, fuel economy, and emissions. Signs of worn plugs include: difficulty starting, a rough idle, a hesitation or misfire under acceleration, reduced fuel economy, or a check engine light with misfire codes. Replace spark plugs on schedule - new plugs restore clean ignition performance and can noticeably improve fuel economy.

Denso Iridium Power spark plugs feature ultra-fine iridium electrodes for improved ignitability, better fuel economy, and enhanced performance. Original equipment on many performance applications, these plugs deliver reliable starting and smooth power delivery.

This part also fits:

• 2007 Mazda 3 Mazdaspeed 6MT
• 2008 Mazda 3 Mazdaspeed 6MT
• 2009 Mazda 3 Mazdaspeed 6MT
• 2010 Mazda 3 Mazdaspeed 6MT
• 2011 Mazda 3 Mazdaspeed 6MT