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
    6 pc NGK Iridium IX Spark Plugs for 2011-2018 Ford Edge 3.5L 3.7L V6
    Rating:
    100%
    Special Price $51.26 Regular Price $72.99
  2. NGK Iridium IX
    8 pc NGK Iridium IX 3691 TR8IX Spark Plugs
    Special Price $59.51 Regular Price $84.99
  3. NGK Iridium IX
    16 pc NGK Iridium IX Spark Plugs for 2009-2020 Chrysler 300 5.7L V8
    Special Price $129.27 Regular Price $184.99
  4. NGK Iridium IX
    4 pc NGK Iridium IX 3521 CR9EIX Spark Plugs
    Rating:
    100%
    Special Price $32.58 Regular Price $46.99
  5. NGK Iridium IX
    4 pc NGK Iridium IX 3981 BR9EIX Spark Plugs
    Special Price $33.39 Regular Price $47.99
  6. NGK Iridium IX
    4 pc NGK Iridium IX Spark Plugs for 2005-2010 Scion tC 2.4L L4
    Special Price $36.68 Regular Price $51.99
  7. NGK Iridium IX
    4 pc NGK Iridium IX Spark Plugs for 1994-2005 Mazda Miata 1.8L L4
    Rating:
    100%
    Special Price $36.68 Regular Price $51.99
  8. NGK Spark Plug
    4 pc NGK Iridium IX Spark Plugs for 2002-2009 Honda CR-V 2.4L L4
    Special Price $36.83 Regular Price $52.99
  9. NGK Iridium IX
    6 pc NGK Iridium IX Spark Plugs for 2007-2018 Lexus ES350 3.5L V6
    Special Price $51.48 Regular Price $73.99
  10. NGK Iridium IX
    6 pc NGK Iridium IX Spark Plugs for 1993-2005 Lexus GS300 3.0L L6
    Special Price $52.31 Regular Price $74.99
  11. NGK Spark Plug
    6 pc NGK Iridium IX Spark Plugs for 2008-2017 Honda Accord 3.5L V6
    Rating:
    100%
    Special Price $52.53 Regular Price $74.99
  12. NGK Spark Plug
    6 pc NGK Iridium IX Spark Plugs for 2015-2019 Acura TLX 3.5L V6
    Special Price $52.53 Regular Price $74.99
  13. NGK Iridium IX
    6 pc NGK Iridium IX Spark Plugs for 2005-2015 Toyota Tacoma 4.0L V6
    Rating:
    100%
    Special Price $52.53 Regular Price $74.99
  14. NGK Iridium IX
    8 pc NGK Iridium IX 7316 TR55-1IX Spark Plugs
    Special Price $60.73 Regular Price $86.99
  15. NGK Iridium IX
    8 pc NGK Iridium IX Spark Plugs for 1992-2000 Lexus SC400 4.0L V8
    Special Price $67.93 Regular Price $96.99
  16. NGK Iridium IX
    16 pc NGK Iridium IX Spark Plugs for 2009-2020 Dodge Durango 5.7L V8
    Rating:
    100%
    Special Price $131.91 Regular Price $187.99
  17. NGK Iridium IX
    8 pc NGK Iridium IX 2318 BR6FIX Spark Plugs
    Special Price $59.25 Regular Price $84.99
  18. NGK Iridium IX
    4 pc NGK Iridium IX 6441 ZFR6FIX-11 Spark Plugs
    Special Price $33.12 Regular Price $46.99
  19. NGK Iridium IX
    8 pc NGK Iridium IX 2669 BKR9EIX Spark Plugs
    Special Price $61.27 Regular Price $87.99
  20. NGK Iridium IX
    8 pc NGK Iridium IX 7189 XR4IX Spark Plugs
    Special Price $60.31 Regular Price $61.55
  21. NGK Iridium IX
    16 pc NGK Iridium IX Spark Plugs for 2005-2008 Chrysler 300 5.7L V8
    Special Price $129.27 Regular Price $184.99
  22. NGK Iridium IX
    2 pc NGK Iridium IX 2202 DPR8EIX-9 Spark Plugs
    Rating:
    100%
    Special Price $16.93 Regular Price $23.99
  23. NGK Iridium IX
    2 pc NGK Iridium IX 2707 BR9ECMIX Spark Plugs
    Special Price $27.96 Regular Price $39.99
  24. NGK Iridium IX
    4 pc NGK Iridium IX 6216 CR9EHIX-9 Spark Plugs
    Special Price $32.58 Regular Price $46.99
  25. NGK Iridium IX
    4 pc NGK Iridium IX 7669 CR8HIX Spark Plugs
    Special Price $32.58 Regular Price $46.99
  26. NGK Iridium IX
    4 pc NGK Iridium IX 8196 DCPR6EIX Spark Plugs
    Rating:
    100%
    Special Price $32.71 Regular Price $46.99
  27. NGK Iridium IX
    4 pc NGK Iridium IX 7803 DPR7EIX-9 Spark Plugs
    Special Price $32.85 Regular Price $46.99
  28. NGK Spark Plug
    4 pc NGK Iridium IX Spark Plugs for 2007-2014 Honda Fit 1.5L L4
    Special Price $36.09 Regular Price $51.99
  29. 4 pc NGK Iridium IX Spark Plugs for 2010-2017 Kia Soul 1.6L 2.0L L4
    4 pc NGK Iridium IX Spark Plugs for 2010-2017 Kia Soul 1.6L 2.0L L4
    Rating:
    100%
    Special Price $36.38 Regular Price $51.99
  30. NGK Iridium IX
    4 pc NGK Iridium IX Spark Plugs for 2001-2005 Honda Civic 1.7L L4
    Rating:
    90%
    Special Price $36.68 Regular Price $51.99
  31. NGK Iridium IX
    4 pc NGK Iridium IX Spark Plugs for 1992-2001 Honda Prelude 2.2L 2.3L L4
    Rating:
    100%
    Special Price $36.68 Regular Price $51.99
  32. NGK Iridium IX
    6 pc NGK Iridium IX 2669 BKR9EIX Spark Plugs
    Special Price $47.20 Regular Price $66.99
  33. NGK Iridium IX
    6 pc NGK Iridium IX 5464 BKR5EIX-11 Spark Plugs
    Special Price $47.20 Regular Price $66.99
  34. NGK Iridium IX
    4 pc NGK Iridium IX 2707 BR9ECMIX Spark Plugs
    Rating:
    100%
    Special Price $49.52 Regular Price $70.99
  35. 6 pc NGK Iridium IX Spark Plugs for 2013-2017 Ram 1500 3.6L V6
    6 pc NGK Iridium IX Spark Plugs for 2013-2017 Ram 1500 3.6L V6
    Special Price $50.81 Regular Price $72.99
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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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