NGK Iridium IX Spark Plugs

NGK spark plugs and DENSO spark plugs, plus those from Autolite, Bosch, and Champion, help maximize engine power and operating performance ride after ride. We carry thousands of spark plugs for everything from Chevy to Ford, Volkswagen to Toyota, all with a 100% fitment guarantee. Browse popular spark plugs including NGK Iridium, NGK Racing, NGK G-Power, and many more replacement spark plugs. Our top-grade Spark Plugs are the key to igniting your ride. Ensure they’re well protected in the Cylinder Head and properly connected via the Coil Boots when replacing them.

NGK spark plugs and DENSO spark plugs, plus those from Autolite, Bosch, and Champion, help maximize engine power and operating performance ride after ride. We carry thousands of spark plugs for everything from Chevy to Ford, Volkswagen to Toyota, all with a 100% fitment guarantee. Browse popular spark plugs including NGK Iridium, NGK Racing, NGK G-Power, and many more replacement spark plugs. Ensure they’re well protected in the Cylinder Head and properly connected via the Coil Boots when replacing them.

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  1. NGK Iridium IX
    NGK Iridium IX 6747 BR8EIX SOLID Spark Plug
    Special Price $8.22 Regular Price $11.99
  2. NGK Iridium IX
    NGK Iridium IX 3520 BR8ECMIX Spark Plug
    Special Price $13.66 Regular Price $19.99
  3. NGK Iridium IX
    16 pc NGK Iridium IX Spark Plugs for 2006-2010 Dodge Charger 6.1L V8
    Rating:
    100%
    Special Price $129.27 Regular Price $184.99
  4. NGK Iridium IX
    8 pc NGK Iridium IX 6509 LTR6IX-11 Spark Plugs
    Special Price $60.05 Regular Price $85.99
  5. NGK Iridium IX
    NGK Iridium IX 8196 DCPR6EIX Spark Plug
    Special Price $7.99 Regular Price $10.99
  6. NGK Iridium IX
    NGK Iridium IX 6619 LFR6AIX-11 Spark Plug
    Special Price $8.17 Regular Price $11.99
  7. NGK Iridium IX
    16 pc NGK Iridium IX Spark Plugs for 2010-2014 Ford F-150 6.2L V8
    Rating:
    100%
    Special Price $131.81 Regular Price $187.99
  8. NGK Iridium IX
    NGK Iridium IX 5687 BR9HIX Spark Plug
    Special Price $7.84 Regular Price $10.99
  9. NGK Iridium IX
    4 pc NGK Iridium IX 6684 BPR8EIX Spark Plugs
    Special Price $33.39 Regular Price $47.99
  10. NGK Iridium IX
    6 pc NGK Iridium IX Spark Plugs for 2011-2017 Ford Mustang 3.7L V6
    Rating:
    100%
    Special Price $51.26 Regular Price $72.99
  11. NGK Iridium IX
    8 pc NGK Iridium IX 7669 CR8HIX Spark Plugs
    Special Price $60.19 Regular Price $85.99
  12. NGK Iridium IX
    8 pc NGK Iridium IX 3689 TR6IX Spark Plugs
    Rating:
    100%
    Special Price $60.73 Regular Price $86.99
  13. NGK Iridium IX
    16 pc NGK Iridium IX Spark Plugs for 2009-2020 Dodge Charger 5.7L V8
    Special Price $131.91 Regular Price $187.99
  14. NGK Iridium IX
    NGK Iridium IX 6664 BR7EIX Spark Plug
    Special Price $8.22 Regular Price $11.99
  15. NGK Iridium IX
    4 pc NGK Iridium IX 6510 LTR7IX-11 Spark Plugs
    Special Price $32.46 Regular Price $45.99
  16. NGK Spark Plug
    6 pc NGK Iridium IX Spark Plugs for 2009-2019 Honda Pilot 3.5L V6
    Rating:
    100%
    Special Price $52.53 Regular Price $74.99
  17. NGK Iridium IX
    8 pc NGK Iridium IX 372 ZNAR6AIX-11 Spark Plugs
    Special Price $60.46 Regular Price $85.99
  18. NGK Iridium IX
    16 pc NGK Iridium IX Spark Plugs for 2005-2010 Chrysler 300 6.1L V8
    Special Price $129.27 Regular Price $184.99
  19. NGK Spark Plug
    6 pc NGK Iridium IX Spark Plugs for 2011-2019 Ford F-150 3.5L V6
    Special Price $52.31 Regular Price $74.99
  20. NGK Iridium IX
    16 pc NGK Iridium IX Spark Plugs for 2009-2010 Dodge Ram 1500 5.7L V8
    Rating:
    100%
    Special Price $129.27 Regular Price $184.99
  21. NGK Iridium IX
    NGK Iridium IX 6681 DR8EIX Spark Plug
    Special Price $8.03 Regular Price $10.99
  22. NGK Iridium IX
    NGK Iridium IX 4085 BPR6HIX Spark Plug
    Special Price $8.17 Regular Price $11.99
  23. NGK Iridium IX
    4 pc NGK Iridium IX Spark Plugs for 1992-2000 Honda Civic 1.5L 1.6L L4
    Rating:
    100%
    Special Price $36.68 Regular Price $51.99
  24. NGK Iridium IX
    4 pc NGK Iridium IX Spark Plugs for 2009-2018 Toyota RAV4 2.5L L4
    Special Price $36.83 Regular Price $52.99
  25. NGK Iridium IX
    8 pc NGK Iridium IX 2309 LFR7AIX Spark Plugs
    Special Price $60.31 Regular Price $85.99
  26. NGK Iridium IX
    8 pc NGK Iridium IX Spark Plugs for 2004-2015 Nissan Titan 5.6L V8
    Rating:
    100%
    Special Price $68.24 Regular Price $96.99
  27. NGK Iridium IX
    16 pc NGK Iridium IX Spark Plugs for 2011-2020 Ram 2500 5.7L 6.4L V8
    Rating:
    100%
    Special Price $129.27 Regular Price $184.99
  28. NGK Iridium IX
    8 pc NGK Iridium IX Spark Plugs for 2011-2017 Ford F-150 5.0L V8
    Rating:
    100%
    Special Price $67.93 Regular Price $96.99
  29. NGK Iridium IX
    4 pc NGK Iridium IX 5464 BKR5EIX-11 Spark Plugs
    Special Price $33.12 Regular Price $46.99
  30. NGK Iridium IX
    6 pc NGK Iridium IX 6619 LFR6AIX-11 Spark Plugs
    Special Price $46.45 Regular Price $65.99
  31. NGK Spark Plug
    4 pc NGK Iridium IX Spark Plugs for 2003-2007 Honda Accord 2.4L L4
    Special Price $36.83 Regular Price $52.99
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Whether you are looking for a long-lasting performance spark plug, or one for everyday use, Sixity has the NGK, DENSO, and Champion spark plugs you need, at prices you will not find anywhere else.

Spark Plug Features

  • Precision ceramic insulators
  • Corrosion-resistant shell with triple high pressure gas seals
  • Screw or snap-on electrical connectors
  • Pre-installed metal compression gaskets
  • Copper-core electrode cooling
  • Application specific heat-range design
  • Improved cold-starting performance
  • Smooth firing at high or low engine RPM
  • Reduced electrode erosion and long service life
  • Enhanced ignition efficiency and fuel economy
  • Superior anti-fouling characteristics
  • Reduced hot-spark firing voltage requirements
  • Maximum engine horsepower and torque
  • Superior throttle-response, acceleration and WOT performance
  • Precision Laser-welded Iridium electrodes - 6X harder than platinum
  • Precision ceramic insulators
  • Corrosion-resistant shell with triple high pressure gas seals
  • Screw or snap-on electrical connectors
  • Pre-installed metal compression gaskets
  • Copper-core electrode cooling
  • Application specific heat-range design
  • Improved cold-starting performance
  • Smooth firing at high or low engine RPM
  • Reduced electrode erosion and long service life
  • Enhanced ignition efficiency and fuel economy
  • Superior anti-fouling characteristics
  • Reduced hot-spark firing voltage requirements
  • Maximum engine horsepower and torque
  • Superior throttle-response, acceleration and WOT performance
  • Precision Laser-welded Iridium electrodes - 6X harder than platinum
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