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Spark Plugs for Mazda 6

Transform your Mazda 6's engine capabilities with the right spark plugs. Choose DENSO for seamless ignition and unmatched dependability, or rely on Bosch for long-term performance. Your Mazda 6 deserves superior components to guarantee driving excellence every time.

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Items 1-48 of 107

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  1. NGK Laser Iridium
    4 pc NGK Laser Iridium Spark Plugs for 2014-2020 Mazda 6 2.5L L4
    Rating:
    100%
    1  Review
    Special Price $59.89 Regular Price $85.99
    NGK / NTK
  2. NGK Spark Plug
    4 pc NGK Iridium IX Spark Plugs for 2014-2020 Mazda 6 2.5L L4
    Rating:
    100%
    1  Review
    Special Price $40.08 Regular Price $56.99
    NGK / NTK
  3. NGK Spark Plug
    4 pc NGK Laser Iridium Spark Plugs for 2018-2020 Mazda 6 2.5L L4
    Special Price $75.98 Regular Price $108.99
    NGK / NTK
  4. NGK G-Power
    6 pc NGK G-Power Spark Plugs for 2003-2008 Mazda 6 3.0L V6
    Special Price $33.10 Regular Price $46.99
    NGK / NTK
  5. Bosch Spark Plug
    6 pc Bosch Double Iridium Spark Plugs for 2003-2008 Mazda 6 3.0L V6
    Special Price $59.15 Regular Price $84.99
    Bosch
    Out of stock
  6. DENSO Spark Plug
    6 pc DENSO Iridium Power Spark Plugs for 2009-2013 Mazda 6 3.7L V6
    Special Price $64.03 Regular Price $90.99
    DENSO
  7. Bosch Spark Plug
    4 pc Bosch Double Iridium Spark Plugs for 2014-2021 Mazda 6 2.5L L4
    Special Price $41.00 Regular Price $58.99
    Bosch
  8. NGK Spark Plug
    4 pc NGK Ruthenium HX Spark Plugs for 2006-2013 Mazda 6 2.3L 2.5L L4
    Special Price $53.62 Regular Price $76.99
    NGK / NTK
  9. NGK Iridium IX
    6 pc NGK Iridium IX Spark Plugs for 2003-2008 Mazda 6 3.0L V6
    Special Price $55.92 Regular Price $79.99
    NGK / NTK
  10. NGK Iridium IX
    6 pc NGK Iridium IX Spark Plugs for 2009-2013 Mazda 6 3.7L V6
    Special Price $56.21 Regular Price $79.99
    NGK / NTK
  11. DENSO Spark Plug
    4 pc DENSO Standard U-Groove Spark Plugs for 2003 Mazda 6 2.3L L4
    Special Price $19.20 Regular Price $26.99
    DENSO
  12. Champion Copper Plus Spark Plug
    4 pc Champion Copper Plus Spark Plugs for 2003-2005 Mazda 6 2.3L L4
    Special Price $19.82 Regular Price $27.99
    Champion
  13. Autolite Copper Core Spark Plug
    4 pc Autolite Copper Core Spark Plug for 2003-2005 Mazda 6 2.3L L4
    Special Price $20.18 Regular Price $28.99
    Autolite
    Out of stock
  14. NGK V-Power
    4 pc NGK V-Power Spark Plugs for 2003-2005 Mazda 6 2.3L L4
    Special Price $20.43 Regular Price $28.99
    NGK / NTK
  15. Autolite Platinum Spark Plug
    4 pc Autolite Platinum Spark Plug for 2003-2005 Mazda 6 2.3L L4
    Special Price $22.35 Regular Price $31.99
    Autolite
    Out of stock
  16. Autolite Platinum Spark Plug
    4 pc Autolite Platinum Spark Plug for 2006-2013 Mazda 6 2.3L 2.5L L4
    Special Price $22.92 Regular Price $32.99
    Autolite
    Out of stock
  17. Champion Platinum Spark Plug
    4 pc Champion Platinum Spark Plugs for 2003-2005 Mazda 6 2.3L L4
    Special Price $23.93 Regular Price $33.99
    Champion
  18. NGK G-Power
    4 pc NGK G-Power Spark Plugs for 2003-2005 Mazda 6 2.3L L4
    Special Price $24.52 Regular Price $34.99
    NGK / NTK
  19. DENSO Spark Plug
    6 pc DENSO Standard U-Groove Spark Plugs for 2003 Mazda 6 3.0L V6
    Special Price $24.54 Regular Price $34.99
    DENSO
  20. DENSO Spark Plug
    6 pc DENSO Standard U-Groove Spark Plugs for 2004-2008 Mazda 6 3.0L V6
    Special Price $25.04 Regular Price $35.99
    DENSO
  21. Autolite Copper Core Spark Plug
    6 pc Autolite Copper Core Spark Plug for 2003-2004 Mazda 6 3.0L V6
    Special Price $25.54 Regular Price $35.99
    Autolite
    Out of stock
  22. Bosch Spark Plug
    4 pc Bosch Platinum Spark Plugs for 2003-2005 Mazda 6 2.3L L4
    Special Price $25.56 Regular Price $36.99
    Bosch
  23. Champion Copper Plus Spark Plug
    6 pc Champion Copper Plus Spark Plugs for 2003-2008 Mazda 6 3.0L V6
    Special Price $26.04 Regular Price $36.99
    Champion
  24. Autolite Copper Core Spark Plug
    6 pc Autolite Copper Core Spark Plugs for 2005-2008 Mazda 6 3.0L V6
    Special Price $26.06 Regular Price $36.99
    Autolite
  25. NGK V-Power
    6 pc NGK V-Power Spark Plugs for 2003-2008 Mazda 6 3.0L V6
    Special Price $26.20 Regular Price $36.99
    NGK / NTK
  26. Champion Spark Plug
    4 pc Champion Platinum Spark Plugs for 2006-2013 Mazda 6 2.3L 2.5L L4
    Special Price $26.61 Regular Price $37.99
    Champion
  27. DENSO Spark Plug
    4 pc DENSO Platinum TT Spark Plugs for 2003-2005 Mazda 6 2.3L L4
    Special Price $27.90 Regular Price $39.99
    DENSO
  28. Champion Copper Plus Spark Plug
    4 pc Champion Copper Plus Spark Plugs for 2014-2020 Mazda 6 2.5L L4
    Special Price $28.94 Regular Price $40.99
    Champion
  29. Autolite Platinum Spark Plug
    6 pc Autolite Platinum Spark Plug for 2003-2004 Mazda 6 3.0L V6
    Special Price $29.40 Regular Price $41.99
    Autolite
    Out of stock
  30. Autolite Platinum Spark Plug
    6 pc Autolite Platinum Spark Plug for 2009-2013 Mazda 6 3.7L V6
    Special Price $29.56 Regular Price $41.99
    Autolite
    Out of stock
  31. Bosch Spark Plug
    4 pc Bosch Platinum Spark Plugs for 2006-2013 Mazda 6 2.3L 2.5L L4
    Special Price $29.57 Regular Price $41.99
    Bosch
  32. Autolite Platinum Spark Plug
    6 pc Autolite Platinum Spark Plug for 2005-2008 Mazda 6 3.0L V6
    Special Price $30.17 Regular Price $42.99
    Autolite
    Out of stock
  33. Champion Platinum Spark Plug
    6 pc Champion Platinum Spark Plugs for 2003-2008 Mazda 6 3.0L V6
    Special Price $32.87 Regular Price $46.99
    Champion
  34. NGK Spark Plug
    4 pc NGK G-Power Spark Plugs for 2006-2007 Mazda 6 2.3L L4
    Special Price $32.95 Regular Price $46.99
    NGK / NTK
  35. NGK G-Power
    4 pc NGK G-Power Spark Plugs for 2006-2013 Mazda 6 2.3L 2.5L L4
    Special Price $32.95 Regular Price $46.99
    NGK / NTK
  36. Autolite Double Platinum Spark Plug
    4 pc Autolite Double Platinum Spark Plug for 2006-2013 Mazda 6 2.3L 2.5L L4
    Special Price $33.04 Regular Price $46.99
    Autolite
    Out of stock
  37. E3 Spark Plug
    4 pc E3 Spark Plugs for 2006-2013 Mazda 6 2.3L 2.5L L4
    Special Price $33.32 Regular Price $47.99
    E3 Spark Plugs
  38. E3 Spark Plug
    4 pc E3 Spark Plugs for 2003-2005 Mazda 6 2.3L L4
    Special Price $33.47 Regular Price $47.99
    E3 Spark Plugs
  39. Autolite Double Platinum Spark Plug
    4 pc Autolite Double Platinum Spark Plug for 2014-2018 Mazda 6
    Special Price $33.61 Regular Price $47.99
    Autolite
    Out of stock
  40. E3 Spark Plug
    4 pc E3 Spark Plugs for 2014-2021 Mazda 6 2.5L L4
    Special Price $33.71 Regular Price $47.99
    E3 Spark Plugs
  41. Autolite Double Platinum Spark Plug
    4 pc Autolite Double Platinum Spark Plug for 2003-2005 Mazda 6 2.3L L4
    Special Price $34.13 Regular Price $48.99
    Autolite
  42. Champion Spark Plug
    6 pc Champion Platinum Spark Plugs for 2009-2013 Mazda 6 3.7L V6
    Special Price $35.99 Regular Price $50.99
    Champion
  43. DENSO Spark Plug
    4 pc DENSO Platinum TT Spark Plugs for 2006-2013 Mazda 6 2.3L 2.5L L4
    Special Price $36.22 Regular Price $51.99
    DENSO
  44. Autolite Iridium XP Spark Plug
    4 pc Autolite Iridium XP Spark Plug for 2014-2018 Mazda 6
    Special Price $36.56 Regular Price $51.99
    Autolite
    Out of stock
  45. Autolite Iridium XP Spark Plug
    4 pc Autolite Iridium XP Spark Plug for 2006-2013 Mazda 6 2.3L 2.5L L4
    Special Price $36.66 Regular Price $51.99
    Autolite
    Out of stock
  46. Autolite Iridium XP Spark Plug
    4 pc Autolite Iridium XP Spark Plug for 2003-2005 Mazda 6 2.3L L4
    Special Price $37.42 Regular Price $52.99
    Autolite
    Out of stock
  47. Champion Spark Plug
    4 pc Champion Double Platinum Spark Plugs for 2006-2013 Mazda 6 2.3L 2.5L L4
    Special Price $38.08 Regular Price $53.99
    Champion
  48. DENSO Spark Plug
    6 pc DENSO Platinum TT Spark Plugs for 2003 Mazda 6 3.0L V6
    Special Price $38.10 Regular Price $53.99
    DENSO
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The Sixity Auto Advantage

Finding the right car spark plugs can seem complicated, but our goal is to make it simple. We combine a massive selection of parts from trusted brands with the expert, US-based support you need to make the right choice. With fast shipping and a 100% fitment guarantee, we provide a hassle-free shopping experience that has earned the trust of over a million customers.

Platinum, Iridium, and More

Choosing the right material is key to your engine’s performance and longevity. We carry a massive selection of aftermarket spark plugs in every type, from long-lasting iridium to dependable copper plugs for classic vehicles. Whatever your engine needs, we have the right plug to match its specific requirements, ensuring optimal spark and efficiency.

Expert Support When You Need It

Not sure which plug is right for your vehicle? Our friendly, US-based customer support team is here to help. With deep knowledge of our full catalog, they can guide you to the perfect car spark plugs for your specific make and model. We are committed to helping you buy with confidence and getting your installation done right the first time.

Frequently Asked Questions

Got a question about our automotive spark plugs? Here are a few things people often ask. For anything else, our main FAQ page has you covered.

How do I find the right spark plugs for my car?

Your best bet is our vehicle selector tool. Just plug in your car’s info, and we’ll show you exactly which plugs are guaranteed to work.

Are your aftermarket spark plugs as good as the originals?

Definitely. We only carry parts that are as good or better than the ones that came in your car, but without those dealership prices.

How often should I replace car spark plugs?

That really depends on the type. A standard copper plug is usually good for about 20,000 miles, while a high-end iridium one can last 100,000. Your owner’s manual will have the exact schedule for your engine.

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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