Autolite Iridium XP 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. Autolite Iridium XP Spark Plug
    8 pc Autolite Iridium XP XP25 Spark Plug
    Special Price $51.75 Regular Price $73.99
    Out of stock
  2. Autolite Iridium XP Spark Plug
    8 pc Autolite Iridium XP Spark Plug for 1988-1995 Chevrolet K2500 5.0L 5.7L
    Special Price $65.08 Regular Price $92.99
    Out of stock
  3. Autolite Iridium XP Spark Plug
    16 pc Autolite Iridium XP Spark Plug for 2014-2018 Ram 2500 6.4L V8
    Special Price $125.82 Regular Price $179.99
    Out of stock
  4. Autolite Iridium XP Spark Plug
    8 pc Autolite Iridium XP Spark Plug for 1992-2009 Mercury Grand Marquis
    Special Price $65.08 Regular Price $92.99
    Out of stock
  5. Autolite Iridium XP Spark Plug
    Autolite Iridium XP XP64 Spark Plug
    Special Price $7.23 Regular Price $9.99
  6. Autolite Iridium XP Spark Plug
    Autolite Iridium XP XP6083 Spark Plug
    Special Price $7.23 Regular Price $9.99
  7. Autolite Iridium XP Spark Plug
    Autolite Iridium XP XP985 Spark Plug
    Special Price $7.23 Regular Price $9.99
  8. Autolite Iridium XP Spark Plug
    Autolite Iridium XP XP5683 Spark Plug
    Special Price $7.23 Regular Price $9.99
    Out of stock
  9. Autolite Iridium XP Spark Plug
    Autolite Iridium XP XP5682 Spark Plug
    Special Price $7.38 Regular Price $10.99
  10. Autolite Iridium XP Spark Plug
    Autolite Iridium XP XP5702 Spark Plug
    Special Price $7.38 Regular Price $10.99
  11. Autolite Iridium XP Spark Plug
    4 pc Autolite Iridium XP XP5145 Spark Plug
    Special Price $26.85 Regular Price $37.99
  12. Autolite Iridium XP Spark Plug
    4 pc Autolite Iridium XP Spark Plug for 2002-2003 Mazda Protege5
    Special Price $36.66 Regular Price $51.99
  13. Autolite Iridium XP Spark Plug
    4 pc Autolite Iridium XP Spark Plug for 1994-1998 Toyota T100 2.7L L4
    Special Price $36.66 Regular Price $51.99
  14. Autolite Iridium XP Spark Plug
    4 pc Autolite Iridium XP Spark Plug for 1998-2003 GMC Sonoma 2.2L L4
    Special Price $36.66 Regular Price $51.99
  15. Autolite Iridium XP Spark Plug
    4 pc Autolite Iridium XP Spark Plug for 2006-2008 Kia Rio
    Special Price $36.66 Regular Price $51.99
  16. Autolite Iridium XP Spark Plug
    4 pc Autolite Iridium XP Spark Plug for 2004-2011 Ford Focus 2.0L 2.3L L4
    Special Price $36.66 Regular Price $51.99
  17. Autolite Iridium XP Spark Plug
    4 pc Autolite Iridium XP Spark Plug for 1998-2003 Chevrolet S10 2.2L L4
    Special Price $37.42 Regular Price $52.99
  18. Autolite Iridium XP Spark Plug
    4 pc Autolite Iridium XP Spark Plug for 2004-2005 Mazda 3 2.0L 2.3L L4
    Special Price $37.42 Regular Price $52.99
  19. Autolite Iridium XP Spark Plug
    4 pc Autolite Iridium XP Spark Plug for 1991-2001 Nissan Sentra 1.6L 2.0L L4
    Special Price $37.42 Regular Price $52.99
  20. Autolite Iridium XP Spark Plug
    4 pc Autolite Iridium XP Spark Plug for 2000-2004 Nissan Xterra 2.4L L4
    Special Price $37.42 Regular Price $52.99
  21. Autolite Iridium XP Spark Plug
    4 pc Autolite Iridium XP Spark Plug for 1970-1972 Mazda 1200
    Special Price $37.85 Regular Price $53.99
  22. Autolite Iridium XP Spark Plug
    6 pc Autolite Iridium XP Spark Plug for 2014-2017 Audi SQ5 3.0L V6
    Special Price $50.87 Regular Price $72.99
    Out of stock
  23. Autolite Iridium XP Spark Plug
    6 pc Autolite Iridium XP Spark Plug for 1996-2000 Nissan Pathfinder
    Special Price $50.87 Regular Price $72.99
    Out of stock
  24. Autolite Iridium XP Spark Plug
    6 pc Autolite Iridium XP Spark Plug for 2000-2004 Nissan Xterra 3.3L V6
    Special Price $50.87 Regular Price $72.99
    Out of stock
  25. Autolite Iridium XP Spark Plug
    6 pc Autolite Iridium XP Spark Plug for 1993-2005 Lexus GS300
    Special Price $50.87 Regular Price $72.99
    Out of stock
  26. Autolite Iridium XP Spark Plug
    6 pc Autolite Iridium XP Spark Plug for 1993-1997 Eagle Vision 3.5L V6
    Special Price $51.03 Regular Price $72.99
  27. Autolite Iridium XP Spark Plug
    6 pc Autolite Iridium XP Spark Plug for 2007-2010 BMW 328i
    Special Price $51.19 Regular Price $72.99
    Out of stock
  28. Autolite Iridium XP Spark Plug
    6 pc Autolite Iridium XP Spark Plug for 1957-1968 Lancia Flaminia 2.5L 2.8L
    Special Price $51.52 Regular Price $73.99
  29. Autolite Iridium XP Spark Plug
    6 pc Autolite Iridium XP Spark Plug for 1997-2002 BMW Z3 2.5L 2.8L 3.0L 3.2L
    Special Price $51.91 Regular Price $73.99
    Out of stock
  30. Autolite Iridium XP Spark Plug
    6 pc Autolite Iridium XP Spark Plug for 1993-2005 BMW 320i
    Special Price $51.91 Regular Price $73.99
    Out of stock
  31. Autolite Iridium XP Spark Plug
    6 pc Autolite Iridium XP Spark Plug for 2001-2002 Oldsmobile Aurora 3.5L V6
    Special Price $51.91 Regular Price $73.99
    Out of stock
  32. Autolite Iridium XP Spark Plug
    6 pc Autolite Iridium XP Spark Plug for 2009-2010 Dodge Journey 3.5L V6
    Special Price $52.08 Regular Price $73.99
  33. Autolite Iridium XP Spark Plug
    6 pc Autolite Iridium XP Spark Plug for 2002-2009 Chevrolet Trailblazer 4.2L
    Special Price $52.24 Regular Price $74.99
    Out of stock
  34. Autolite Iridium XP Spark Plug
    6 pc Autolite Iridium XP Spark Plug for 1970-1973 Nissan 240Z 2.4L L6
    Special Price $52.57 Regular Price $74.99
  35. Autolite Iridium XP Spark Plug
    8 pc Autolite Iridium XP Spark Plug for 1994-1997 Dodge Ram 1500 5.2L 5.9L
    Special Price $65.08 Regular Price $92.99
    Out of stock
  36. Autolite Iridium XP Spark Plug
    8 pc Autolite Iridium XP Spark Plug for 1975-1981 Buick Electra 4.9L 5.7L
    Special Price $65.08 Regular Price $92.99
  37. Autolite Iridium XP Spark Plug
    8 pc Autolite Iridium XP Spark Plug for 1975-1981 Pontiac Bonneville 4.3L
    Special Price $65.08 Regular Price $92.99
  38. Autolite Iridium XP Spark Plug
    8 pc Autolite Iridium XP Spark Plug for 2008-2010 Dodge Dakota 4.7L V8
    Special Price $68.05 Regular Price $96.99
    Out of stock
  39. Autolite Iridium XP Spark Plug
    16 pc Autolite Iridium XP Spark Plug for 2006-2010 Dodge Charger 5.7L 6.1L
    Special Price $123.30 Regular Price $175.99
    Out of stock
  40. Autolite Iridium XP Spark Plug
    Autolite Iridium XP XP105 Spark Plug
    Special Price $7.23 Regular Price $9.99
  41. Autolite Iridium XP Spark Plug
    Autolite Iridium XP XP5363 Spark Plug
    Special Price $7.23 Regular Price $9.99
    Out of stock
  42. Autolite Iridium XP Spark Plug
    Autolite Iridium XP XP3924 Spark Plug
    Special Price $7.23 Regular Price $9.99
  43. Autolite Iridium XP Spark Plug
    Autolite Iridium XP XP5144 Spark Plug
    Special Price $7.23 Regular Price $9.99
    Out of stock
  44. Autolite Iridium XP Spark Plug
    Autolite Iridium XP XP5405 Spark Plug
    Special Price $7.23 Regular Price $9.99
  45. Autolite Iridium XP Spark Plug
    Autolite Iridium XP XP606 Spark Plug
    Special Price $7.23 Regular Price $9.99
  46. Autolite Iridium XP Spark Plug
    Autolite Iridium XP XP104 Spark Plug
    Special Price $7.23 Regular Price $9.99
  47. Autolite Iridium XP Spark Plug
    Autolite Iridium XP XP63 Spark Plug
    Special Price $7.23 Regular Price $9.99
  48. Autolite Iridium XP Spark Plug
    Autolite Iridium XP XP5701 Spark Plug
    Special Price $7.23 Regular Price $9.99
    Out of stock
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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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