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Spark Plugs for Lexus IS300

Maintain the exceptional precision of your Lexus IS300 with top-notch spark plugs. Reliable picks like Bosch enhance energy transfer for better starts, while Champion boosts performance through demanding conditions. Equip your IS300 with spark plugs that ensure optimal capability.

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  1. NGK Spark Plug
    6 pc NGK Ruthenium HX Spark Plugs for 2001-2005 Lexus IS300 3.0L L6
    Special Price $76.60 Regular Price $108.99
    NGK / NTK
  2. NGK Iridium IX
    6 pc NGK Iridium IX Spark Plugs for 2001-2005 Lexus IS300 3.0L L6
    Special Price $57.18 Regular Price $81.99
    NGK / NTK
  3. NGK Laser Iridium
    6 pc NGK Laser Iridium Spark Plugs for 2016-2017 Lexus IS300 3.5L V6
    Rating:
    100%
    1  Review
    Special Price $113.91 Regular Price $162.99
    NGK / NTK
  4. NGK Laser Iridium
    6 pc NGK Laser Iridium Spark Plugs for 2001-2005 Lexus IS300 3.0L L6
    Special Price $61.39 Regular Price $87.99
    NGK / NTK
  5. DENSO Spark Plug
    6 pc DENSO Double Platinum Spark Plugs for 2001-2005 Lexus IS300 3.0L L6
    Special Price $54.94 Regular Price $77.99
    DENSO
  6. DENSO Spark Plug
    6 pc DENSO Iridium Long Life Spark Plugs for 2001-2005 Lexus IS300 3.0L L6
    Special Price $64.47 Regular Price $91.99
    DENSO
  7. NGK Spark Plug
    6 pc NGK Ruthenium HX Spark Plugs for 2016-2017 Lexus IS300 3.5L V6
    Special Price $78.32 Regular Price $111.99
    NGK / NTK
  8. Fel-Pro Spark Plug Tube Seal Set
    Fel-Pro Valve Cover Spark Plug Tube Seal Set for 2016-2018 Lexus IS300 3.5L V6
    Special Price $27.32 Regular Price $38.99
    Fel-Pro
  9. Autolite Platinum Spark Plug
    6 pc Autolite Platinum Spark Plug for 2001-2005 Lexus IS300
    Special Price $29.72 Regular Price $41.99
    Autolite
  10. Champion Spark Plug
    6 pc Champion Iridium Spark Plugs for 2001-2005 Lexus IS300 3.0L L6
    Special Price $51.94 Regular Price $73.99
    Champion
  11. NGK Laser Platinum
    6 pc NGK Laser Platinum Spark Plugs for 2001-2005 Lexus IS300 3.0L L6
    Special Price $54.36 Regular Price $77.99
    NGK / NTK
  12. NGK Spark Plug
    4 pc NGK Laser Iridium Spark Plugs for 2018-2020 Lexus IS300 2.0L L4
    Special Price $75.18 Regular Price $106.99
    NGK / NTK
  13. Autolite Platinum Spark Plug
    4 pc Autolite Platinum Spark Plug for 2018-2019 Lexus IS300 2.0L L4
    Special Price $23.14 Regular Price $32.99
    Autolite
    Out of stock
  14. Champion Spark Plug
    6 pc Champion Copper Plus Spark Plugs for 2001-2005 Lexus IS300 3.0L L6
    Special Price $23.88 Regular Price $33.99
    Champion
  15. Autolite Copper Core Spark Plug
    4 pc Autolite Copper Core Spark Plugs for 2018-2019 Lexus IS300 2.0L L4
    Special Price $24.01 Regular Price $33.99
    Autolite
    Out of stock
  16. Champion Spark Plug
    6 pc Champion Copper Plus Spark Plugs for 2016-2020 Lexus IS300 3.5L V6
    Special Price $24.16 Regular Price $34.99
    Champion
  17. DENSO Spark Plug
    6 pc DENSO Standard U-Groove Spark Plugs for 2001-2005 Lexus IS300 3.0L L6
    Special Price $24.54 Regular Price $34.99
    DENSO
  18. NGK Standard
    6 pc NGK Standard Spark Plugs for 2001-2005 Lexus IS300 3.0L L6
    Special Price $25.34 Regular Price $35.99
    NGK / NTK
  19. NGK V-Power
    6 pc NGK V-Power Spark Plugs for 2001-2005 Lexus IS300 3.0L L6
    Special Price $27.68 Regular Price $39.99
    NGK / NTK
  20. Champion Spark Plug
    6 pc Champion Platinum Spark Plugs for 2001-2005 Lexus IS300 3.0L L6
    Special Price $30.28 Regular Price $42.99
    Champion
  21. Autolite Platinum Spark Plug
    6 pc Autolite Platinum Spark Plug for 2016-2019 Lexus IS300 3.5L V6
    Special Price $30.50 Regular Price $43.99
    Autolite
    Out of stock
  22. Autolite Copper Core Spark Plug
    6 pc Autolite Copper Core Spark Plugs for 2016-2019 Lexus IS300 3.5L V6
    Special Price $31.16 Regular Price $44.99
    Autolite
    Out of stock
  23. Autolite Double Platinum Spark Plug
    4 pc Autolite Double Platinum Spark Plug for 2018-2019 Lexus IS300 2.0L L4
    Special Price $34.35 Regular Price $48.99
    Autolite
    Out of stock
  24. NGK G-Power
    6 pc NGK G-Power Spark Plugs for 2001-2005 Lexus IS300 3.0L L6
    Special Price $34.60 Regular Price $48.99
    NGK / NTK
  25. Champion Iridium Spark Plug
    4 pc Champion Iridium Spark Plugs for 2019-2020 Lexus IS300 2.0L L4
    Special Price $35.97 Regular Price $50.99
    Champion
  26. Autolite Iridium XP Spark Plug
    4 pc Autolite Iridium XP Spark Plug for 2018-2019 Lexus IS300 2.0L L4
    Special Price $36.88 Regular Price $52.99
    Autolite
    Out of stock
  27. DENSO Spark Plug
    6 pc DENSO Platinum TT Spark Plugs for 2001-2005 Lexus IS300 3.0L L6
    Special Price $37.33 Regular Price $52.99
    DENSO
  28. Champion Spark Plug
    6 pc Champion Double Platinum Spark Plugs for 2001-2005 Lexus IS300 3.0L L6
    Special Price $43.04 Regular Price $60.99
    Champion
  29. Autolite Double Platinum Spark Plug
    6 pc Autolite Double Platinum Spark Plug for 2001-2005 Lexus IS300
    Special Price $45.27 Regular Price $64.99
    Autolite
  30. E3 Spark Plug
    6 pc E3 Spark Plugs for 2001-2005 Lexus IS300 3.0L L6
    Special Price $45.52 Regular Price $64.99
    E3 Spark Plugs
  31. E3 Spark Plug
    6 pc E3 Spark Plugs for 2016-2022 Lexus IS300 3.5L V6
    Special Price $46.89 Regular Price $66.99
    E3 Spark Plugs
  32. Autolite Double Platinum Spark Plug
    6 pc Autolite Double Platinum Spark Plug for 2016-2019 Lexus IS300 3.5L V6
    Special Price $47.40 Regular Price $67.99
    Autolite
    Out of stock
  33. Autolite Iridium XP Spark Plug
    6 pc Autolite Iridium XP Spark Plug for 2001-2005 Lexus IS300
    Special Price $51.91 Regular Price $73.99
    Autolite
    Out of stock
  34. Autolite Iridium XP Spark Plug
    6 pc Autolite Iridium XP Spark Plug for 2016-2019 Lexus IS300 3.5L V6
    Special Price $52.24 Regular Price $74.99
    Autolite
    Out of stock
  35. Champion Iridium Spark Plug
    6 pc Champion Iridium Spark Plugs for 2016-2017 Lexus IS300 3.5L V6
    Special Price $53.15 Regular Price $75.99
    Champion
  36. Champion Spark Plug
    6 pc Champion Iridium Spark Plugs for 2018-2020 Lexus IS300 3.5L V6
    Special Price $55.00 Regular Price $78.99
    Champion
  37. DENSO Spark Plug
    6 pc DENSO Iridium Power Spark Plugs for 2001-2005 Lexus IS300 3.0L L6
    Special Price $56.43 Regular Price $80.99
    DENSO
  38. DENSO Spark Plug
    6 pc DENSO Iridium TT Spark Plugs for 2001-2005 Lexus IS300 3.0L L6
    Special Price $61.62 Regular Price $87.99
    DENSO
  39. DENSO Spark Plug
    6 pc DENSO Iridium TT Spark Plugs for 2016 Lexus IS300 3.5L V6
    Special Price $86.25 Regular Price $122.99
    DENSO
  40. DENSO Spark Plug
    6 pc DENSO Iridium Long Life Spark Plugs for 2016 Lexus IS300 3.5L V6
    Special Price $120.39 Regular Price $171.99
    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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