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07-13 Mazdaspeed3 NGK Iridium Spark Plugs

NGK Laser Iridium

Perfect for direct OEM replacement applications, Laser Iridium spark plugs for 07-08 Mazdaspeed3 provide superior ignitability and long service life. NGK Laser Iridium spark plugs feature the smallest tip diameter available Iridium surface to ensure slow wear rate providing stable idle, superior anti fouling, improved fuel efficiency and lower emissions. Designed as a OEM compliant replacement plug, Laser Iridium spark plugs are designed with a laser welded iridium tip, and Trivalent metal plating for faster starts and quicker acceleration. Laser Iridium spark plugs for the Mazdaspeed3 come pre-gapped to .032, and do not require modification or re-gapping to run safely on your Mazdaspeed3.


  • FITMENT:
  • Mazdaspeed3 2007-2013
Description Part # MSRP Price Inventory  
Laser Iridium Stock Heat (Set of 4) 3787 $65.12 $48.24 1 available
NGK Iridium IX

Iridium IX high performance one step colder spark plugs for the Mazdaspeed3 are optimized for better durability, improved center electrode anti-oxidation and anti-erosion, improved ignition, superior anti-fouling and lower required voltage. One Step Colder plugs are only recommended for moderate-heavily modified Mazdaspeed3 MZR motors only.


  • Note:
  • Iridium IX one step colder spark plugs are not a direct bolt-in for the Mazdaspeed3. These plugs come pre-gapped to .044 and will need to be re-gapped into the .028-.031 stock range. Improper gapping can damage the delicate Iridium tip, so contact your local performance shop if you are unsure how to properly install these spark plugs. We cannot honor and returns or exchanges on damaged spark plugs due to improper gapping or use of the plugs at the improper gap. NGK One Step Colder plugs are only designed for applications with 100hp over stock.
  • FITMENT:
  • Mazdaspeed3 2007-2013
Description Part # MSRP Price Inventory  
Iridium IX One Step Colder (Set of 4) 6510 $45.79 $33.92 1 available
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©2014 JSC Speed Inc.
All Rights Reserved.

510 Hyde Park
Doylestown, PA
18902

Tel: 215.489.2820
Fax: 215.489.2826