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Copper Plus High-Performance Car Spark Plugs

Top brands like NGK, DENSO, Autolite, and Champion help maximize your engine’s power and performance. We carry thousands of automotive spark plugs for everything from a Chevy to a Ford or a Volkswagen to a Toyota, all backed by our 100% fitment guarantee. Browse popular series, including NGK Iridium, NGK Racing, and NGK G-Power, to find the perfect replacement spark plugs for your vehicle.

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. Champion Spark Plug
    10 pc Champion Copper Plus 71 RC12YC Spark Plugs
    Special Price $21.56 Regular Price $30.99
    Champion
  2. Champion Spark Plug
    8 pc Champion Copper Plus 439 RC12MCC4 Spark Plugs
    Rating:
    100%
    1  Review
    Special Price $18.25 Regular Price $25.99
    Champion
  3. Champion Spark Plug
    16 pc Champion Copper Plus Spark Plugs for 2003-2008 Dodge Ram 1500 5.7L V8
    Rating:
    100%
    4  Reviews
    Special Price $53.59 Regular Price $76.99
    Champion
  4. Champion Spark Plug
    6 pc Champion Copper Plus 955M XC12PEPB Spark Plugs
    Rating:
    100%
    1  Review
    Special Price $37.09 Regular Price $52.99
    Champion
  5. Champion Spark Plug
    8 pc Champion Copper Plus 570 RE14MCC4 Spark Plugs
    Rating:
    80%
    1  Review
    Special Price $19.71 Regular Price $27.99
    Champion
  6. Champion Spark Plug
    10 pc Champion Copper Plus 988 XC10YC Spark Plugs
    Special Price $28.86 Regular Price $40.99
    Champion
  7. Champion Spark Plug
    6 pc Champion Copper Plus 438 RC12ECC Spark Plugs
    Rating:
    100%
    3  Reviews
    Special Price $14.22 Regular Price $19.99
    Champion
  8. Champion Spark Plug
    10 pc Champion Copper Plus 848 CJ8Y Spark Plugs
    Special Price $21.56 Regular Price $30.99
    Champion
  9. Champion Spark Plug
    8 pc Champion Copper Plus 71-1 RC12YC Spark Plugs
    Special Price $17.08 Regular Price $23.99
    Champion
    Out of stock
  10. Champion Spark Plug
    8 pc Champion Copper Plus 980 XC92YC Spark Plugs
    Special Price $23.74 Regular Price $33.99
    Champion
  11. Champion Spark Plug
    8 pc Champion Copper Plus 71 RC12YC Spark Plugs
    Special Price $17.08 Regular Price $23.99
    Champion
  12. Champion Spark Plug
    6 pc Champion Copper Plus 938M QL78YC Spark Plugs
    Special Price $19.02 Regular Price $26.99
    Champion
  13. Champion Spark Plug
    4 pc Champion Copper Plus 988 XC10YC Spark Plugs
    Special Price $12.06 Regular Price $16.99
    Champion
  14. Champion Spark Plug
    8 pc Champion Copper Plus 10 J12YC Spark Plugs
    Special Price $17.08 Regular Price $23.99
    Champion
  15. Champion Spark Plug
    6 pc Champion Copper Plus 932M QL82YC Spark Plugs
    Special Price $20.31 Regular Price $28.99
    Champion
  16. Champion Spark Plug
    6 pc Champion Copper Plus 831 UL77V Spark Plugs
    Special Price $33.53 Regular Price $47.99
    Champion
    Out of stock
  17. Champion Spark Plug
    10 pc Champion Copper Plus 827M L76V Spark Plugs
    Special Price $55.15 Regular Price $78.99
    Champion
  18. Champion Spark Plug
    8 pc Champion Copper Plus 436 RC12LC4 Spark Plugs
    Rating:
    100%
    1  Review
    Special Price $16.65 Regular Price $23.99
    Champion
  19. Champion Spark Plug
    8 pc Champion Copper Plus 955M XC12PEPB Spark Plugs
    Special Price $49.17 Regular Price $69.99
    Champion
  20. Champion Spark Plug
    4 pc Champion Copper Plus 405 RN14YC Spark Plugs
    Special Price $8.94 Regular Price $12.99
    Champion
  21. Champion Spark Plug
    8 pc Champion Copper Plus 14 RJ12YC Spark Plugs
    Special Price $16.97 Regular Price $23.99
    Champion
  22. Champion Spark Plug
    10 pc Champion Copper Plus 980 XC92YC Spark Plugs
    Special Price $28.86 Regular Price $40.99
    Champion
  23. Champion Spark Plug
    6 pc Champion Copper Plus 412 RC12LYC Spark Plugs
    Special Price $12.70 Regular Price $17.99
    Champion
  24. Champion Spark Plug
    10 pc Champion Copper Plus 861 J19LM Spark Plugs
    Special Price $20.19 Regular Price $28.99
    Champion
  25. Champion Spark Plug
    10 pc Champion Copper Plus 404 RN12YC Spark Plugs
    Special Price $21.02 Regular Price $29.99
    Champion
  26. Champion Spark Plug
    10 pc Champion Copper Plus 847 DJ8J Spark Plugs
    Special Price $21.79 Regular Price $30.99
    Champion
  27. Champion Spark Plug
    10 pc Champion Copper Plus 982 XC12YC Spark Plugs
    Special Price $29.45 Regular Price $41.99
    Champion
    Out of stock
  28. Champion Spark Plug
    6 pc Champion Copper Plus Spark Plugs for 1999-2006 Jeep Wrangler 4.0L L6
    Special Price $23.84 Regular Price $33.99
    Champion
  29. Champion Spark Plug
    16 pc Champion Copper Plus Spark Plugs for 2011-2019 Ram 1500 5.7L V8
    Rating:
    98%
    8  Reviews
    Special Price $53.70 Regular Price $76.99
    Champion
  30. Champion Spark Plug
    4 pc Champion Copper Plus 71 RC12YC Spark Plugs
    Special Price $9.16 Regular Price $12.99
    Champion
  31. Champion Spark Plug
    6 pc Champion Copper Plus Spark Plugs for 1991-1998 Jeep Cherokee 4.0L L6
    Special Price $21.86 Regular Price $30.99
    Champion
  32. Champion Spark Plug
    6 pc Champion Copper Plus 10 J12YC Spark Plugs
    Special Price $13.02 Regular Price $18.99
    Champion
  33. Champion Spark Plug
    6 pc Champion Copper Plus Spark Plugs for 1999-2001 Jeep Cherokee 4.0L L6
    Rating:
    100%
    1  Review
    Special Price $23.84 Regular Price $33.99
    Champion
  34. Champion Spark Plug
    Champion Copper Plus 406 RV12YC Spark Plug
    Special Price $2.92 Regular Price $3.99
    Champion
  35. Champion Spark Plug
    2 pc Champion Copper Plus 823 J6C Spark Plugs
    Special Price $5.08 Regular Price $6.99
    Champion
  36. Champion Spark Plug
    8 pc Champion Copper Plus 401 RS12YC Spark Plugs
    Special Price $18.57 Regular Price $26.99
    Champion
  37. Champion Spark Plug
    10 pc Champion Copper Plus 335 RC10YC Spark Plugs
    Special Price $20.86 Regular Price $29.99
    Champion
  38. Champion Spark Plug
    6 pc Champion Copper Plus Spark Plugs for 1999-2004 Jeep Grand Cherokee 4.0L L6
    Special Price $23.84 Regular Price $33.99
    Champion
  39. Champion Spark Plug
    6 pc Champion Copper Plus Spark Plugs for 2004-2010 Dodge Dakota 3.7L V6
    Special Price $24.37 Regular Price $34.99
    Champion
  40. Champion Copper Plus Spark Plug
    8 pc Champion Copper Plus Spark Plugs for 1994-1997 Dodge Ram 1500 5.2L 5.9L V8
    Special Price $27.52 Regular Price $38.99
    Champion
  41. Champion Spark Plug
    6 pc Champion Copper Plus 827M L76V Spark Plugs
    Special Price $32.78 Regular Price $46.99
    Champion
  42. Champion Spark Plug
    6 pc Champion Copper Plus 833M L78V Spark Plugs
    Special Price $32.78 Regular Price $46.99
    Champion
  43. Champion Spark Plug
    6 pc Champion Copper Plus 956M QC12PEP Spark Plugs
    Special Price $37.85 Regular Price $53.99
    Champion
  44. Champion Spark Plug
    16 pc Champion Copper Plus Spark Plugs for 2009-2019 Dodge Charger 5.7L V8
    Special Price $52.63 Regular Price $74.99
    Champion
  45. Champion Spark Plug
    4 pc Champion Copper Plus 429 3X Spark Plugs
    Rating:
    100%
    1  Review
    Special Price $140.49 Regular Price $200.99
    Champion
    Out of stock
  46. Champion Spark Plug
    8 pc Champion Copper Plus 71S RC12YC Spark Plugs
    Special Price $16.88 Regular Price $23.99
    Champion
  47. Champion Spark Plug
    8 pc Champion Copper Plus 405 RN14YC Spark Plugs
    Special Price $16.65 Regular Price $23.99
    Champion
  48. Champion Spark Plug
    16 pc Champion Copper Plus Spark Plugs for 2009-2010 Dodge Ram 1500 5.7L V8
    Rating:
    80%
    1  Review
    Special Price $52.63 Regular Price $74.99
    Champion
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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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100% fitment guarantee at sixityauto.com

100% FITMENT GUARANTEE
Your parts will fit as advertised

Shop with confidence, knowing that your purchase from Sixity Auto will fit your vehicle. If after purchase you determine that your part does not fit the vehicle we advertised, simply contact us to initiate a return. We want your parts to fit!

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We speak your language. Our staff has decades of experience selling auto parts to enthusiasts like you. Whether it's for your car, truck, or van, we have staff on hand that can answer your questions and make sure you get the part you're looking for.

For phone sales or help with product fitment questions, our U.S.-based customer service staff in California and Indiana is available weekdays, 8am-8pm ET.

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Sixity Auto works with a wide range of business customers—from repair shops and dealerships to fleet operators, government organizations, and others that purchase parts for resale or operational use.

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Save 10% on every purchase

Sixity Auto is proud to support our Active-Duty Service Members, Vets, and their immediate families. To show a token of our thanks, we extend a 10% discount on your entire purchase, every single day.

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© 2026 Sixity, Inc. Part of Proximity Group, an American-owned and operated online retailer. All Rights Reserved.