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Spark Plugs for Subaru Legacy

Unlock your Subaru Legacy’s full potential with high-performing spark plugs built for lasting durability. Dependable brands like NGK offer consistent ignition precision, while Autolite spark plugs excel in optimizing fuel economy. Give your Legacy the upgrade it deserves for improved performance and power.

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Items 1-48 of 117

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  1. NGK Spark Plug
    4 pc NGK Iridium IX Spark Plugs for 2013-2019 Subaru Legacy 2.5L H4
    Special Price $40.08 Regular Price $56.99
    NGK / NTK
  2. NGK Laser Iridium
    6 pc NGK Laser Iridium Spark Plugs for 2010-2019 Subaru Legacy 3.6L H6
    Special Price $108.21 Regular Price $154.99
    NGK / NTK
  3. NGK Spark Plug
    4 pc NGK Iridium IX Spark Plugs for 2005-2012 Subaru Legacy 2.5L H4
    Special Price $39.27 Regular Price $55.99
    NGK / NTK
  4. NGK Standard
    4 pc NGK Standard Spark Plugs for 1995-2009 Subaru Legacy 2.2L 2.5L H4
    Special Price $21.31 Regular Price $29.99
    NGK / NTK
  5. DENSO Spark Plug
    4 pc DENSO Iridium Power Spark Plugs for 2005-2012 Subaru Legacy 2.5L H4
    Special Price $44.43 Regular Price $62.99
    DENSO
  6. NGK Iridium IX
    4 pc NGK Iridium IX Spark Plugs for 1995-2009 Subaru Legacy 2.2L 2.5L H4
    Special Price $39.18 Regular Price $55.99
    NGK / NTK
  7. E3 Spark Plug
    4 pc E3 Spark Plugs for 1990-2012 Subaru Legacy 2.2L 2.5L H4
    Special Price $33.47 Regular Price $47.99
    E3 Spark Plugs
  8. Champion Copper Plus Spark Plug
    4 pc Champion Copper Plus Spark Plugs for 2013-2019 Subaru Legacy 2.5L H4
    Special Price $28.94 Regular Price $40.99
    Champion
  9. E3 Spark Plug
    4 pc E3 Spark Plugs for 2013-2015 Subaru Legacy 2.5L H4
    Special Price $33.03 Regular Price $46.99
    E3 Spark Plugs
  10. E3 Spark Plug
    6 pc E3 Spark Plugs for 2008-2015 Subaru Legacy 3.0L 3.6L H6
    Special Price $46.89 Regular Price $66.99
    E3 Spark Plugs
  11. NGK Iridium IX
    6 pc NGK Iridium IX Spark Plugs for 2008-2019 Subaru Legacy 3.0L 3.6L H6
    Special Price $56.35 Regular Price $80.99
    NGK / NTK
  12. Bosch Spark Plug
    6 pc Bosch Double Iridium Spark Plugs for 2010-2019 Subaru Legacy 3.6L H6
    Special Price $62.65 Regular Price $88.99
    Bosch
  13. Champion Copper Plus Spark Plug
    4 pc Champion Copper Plus Spark Plugs for 1996-2009 Subaru Legacy 2.5L H4
    Special Price $18.11 Regular Price $25.99
    Champion
  14. Bosch Spark Plug
    4 pc Bosch Nickel Copper Spark Plugs for 1990-2004 Subaru Legacy 2.2L 2.5L H4
    Special Price $18.19 Regular Price $25.99
    Bosch
  15. Champion Spark Plug
    4 pc Champion Copper Plus Spark Plugs for 1990-2010 Subaru Legacy 2.2L 2.5L H4
    Special Price $18.55 Regular Price $25.99
    Champion
  16. Champion Spark Plug
    4 pc Champion Copper Plus Spark Plugs for 2011-2012 Subaru Legacy 2.5L H4
    Special Price $18.75 Regular Price $26.99
    Champion
  17. DENSO Spark Plug
    4 pc DENSO Standard U-Groove Spark Plugs for 1990-2009 Subaru Legacy 2.2L 2.5L H4
    Special Price $18.81 Regular Price $26.99
    DENSO
  18. NGK Standard
    4 pc NGK Standard Spark Plugs for 1990-2003 Subaru Legacy 2.2L 2.5L H4
    Special Price $18.84 Regular Price $26.99
    NGK / NTK
  19. Autolite Copper Core Spark Plug
    4 pc Autolite Copper Core Spark Plugs for 1990-2012 Subaru Legacy 2.2L 2.5L H4
    Special Price $19.56 Regular Price $27.99
    Autolite
    Out of stock
  20. Champion Spark Plug
    4 pc Champion Copper Plus Spark Plugs for 2005-2012 Subaru Legacy 2.5L H4
    Special Price $19.58 Regular Price $27.99
    Champion
  21. NGK V-Power
    4 pc NGK V-Power Spark Plugs for 2004 Subaru Legacy 2.5L H4
    Special Price $19.93 Regular Price $27.99
    NGK / NTK
  22. NGK V-Power
    4 pc NGK V-Power Spark Plugs for 1990-2012 Subaru Legacy 2.2L 2.5L H4
    Special Price $20.62 Regular Price $28.99
    NGK / NTK
  23. NGK V-Power
    4 pc NGK V-Power Spark Plugs for 1995-2009 Subaru Legacy 2.2L 2.5L H4
    Special Price $20.62 Regular Price $28.99
    NGK / NTK
  24. Autolite Platinum Spark Plug
    4 pc Autolite Platinum Spark Plug for 1996-2009 Subaru Legacy 2.5L H4
    Special Price $22.57 Regular Price $31.99
    Autolite
    Out of stock
  25. Autolite Platinum Spark Plug
    4 pc Autolite Platinum Spark Plug for 2005-2012 Subaru Legacy
    Special Price $22.67 Regular Price $31.99
    Autolite
    Out of stock
  26. Autolite Platinum Spark Plug
    4 pc Autolite Platinum Spark Plug for 1990-2012 Subaru Legacy 2.2L 2.5L H4
    Special Price $22.92 Regular Price $32.99
    Autolite
    Out of stock
  27. Champion Spark Plug
    4 pc Champion Platinum Spark Plugs for 1996-2009 Subaru Legacy 2.5L H4
    Special Price $23.04 Regular Price $32.99
    Champion
  28. Autolite Copper Core Spark Plug
    4 pc Autolite Copper Core Spark Plugs for 2005-2012 Subaru Legacy
    Special Price $24.01 Regular Price $33.99
    Autolite
    Out of stock
  29. NGK G-Power
    4 pc NGK G-Power Spark Plugs for 1995-2009 Subaru Legacy 2.2L 2.5L H4
    Special Price $24.67 Regular Price $34.99
    NGK / NTK
  30. NGK G-Power
    4 pc NGK G-Power Spark Plugs for 1990-2012 Subaru Legacy 2.2L 2.5L H4
    Special Price $24.71 Regular Price $34.99
    NGK / NTK
  31. Champion Spark Plug
    4 pc Champion Platinum Spark Plugs for 1991-1994 Subaru Legacy 2.2L H4
    Special Price $25.89 Regular Price $36.99
    Champion
  32. Bosch Spark Plug
    4 pc Bosch Platinum Spark Plugs for 2004-2009 Subaru Legacy 2.5L H4
    Special Price $25.89 Regular Price $36.99
    Bosch
    Out of stock
  33. Champion Spark Plug
    6 pc Champion Copper Plus Spark Plugs for 2008-2019 Subaru Legacy 3.0L 3.6L H6
    Special Price $26.21 Regular Price $36.99
    Champion
  34. Bosch Spark Plug
    4 pc Bosch Platinum Spark Plugs for 1990-2004 Subaru Legacy 2.2L 2.5L H4
    Special Price $26.77 Regular Price $37.99
    Bosch
  35. Champion Spark Plug
    4 pc Champion Platinum Spark Plugs for 1990-2012 Subaru Legacy 2.2L 2.5L H4
    Special Price $27.16 Regular Price $38.99
    Champion
  36. DENSO Spark Plug
    4 pc DENSO Platinum TT Spark Plugs for 1990-2010 Subaru Legacy 2.2L 2.5L H4
    Special Price $27.34 Regular Price $38.99
    DENSO
  37. Autolite Platinum Spark Plug
    6 pc Autolite Platinum Spark Plug for 2008-2019 Subaru Legacy 3.0L 3.6L H6
    Special Price $30.50 Regular Price $43.99
    Autolite
    Out of stock
  38. Autolite Copper Core Spark Plug
    6 pc Autolite Copper Core Spark Plugs for 2008-2019 Subaru Legacy 3.0L 3.6L H6
    Special Price $31.16 Regular Price $44.99
    Autolite
    Out of stock
  39. Autolite Double Platinum Spark Plug
    4 pc Autolite Double Platinum Spark Plug for 1990-2012 Subaru Legacy 2.2L
    Special Price $32.93 Regular Price $46.99
    Autolite
    Out of stock
  40. E3 Spark Plug
    4 pc E3 Spark Plugs for 1996-2009 Subaru Legacy 2.5L H4
    Special Price $33.47 Regular Price $47.99
    E3 Spark Plugs
  41. Autolite Double Platinum Spark Plug
    4 pc Autolite Double Platinum Spark Plug for 2013-2019 Subaru Legacy 2.5L H4
    Special Price $33.50 Regular Price $47.99
    Autolite
    Out of stock
  42. Autolite Double Platinum Spark Plug
    4 pc Autolite Double Platinum Spark Plug for 1996-2009 Subaru Legacy 2.5L H4
    Special Price $33.61 Regular Price $47.99
    Autolite
    Out of stock
  43. NGK Spark Plug
    4 pc NGK G-Power Spark Plugs for 2013-2019 Subaru Legacy 2.5L H4
    Special Price $33.73 Regular Price $47.99
    NGK / NTK
  44. NGK G-Power
    4 pc NGK G-Power Spark Plugs for 2005-2012 Subaru Legacy 2.5L H4
    Special Price $33.73 Regular Price $47.99
    NGK / NTK
  45. DENSO Spark Plug
    4 pc DENSO Standard U-Groove Spark Plugs for 2005-2008 Subaru Legacy 2.5L H4
    Special Price $33.74 Regular Price $47.99
    DENSO
  46. E3 Spark Plug
    4 pc E3 Spark Plugs for 2005-2012 Subaru Legacy 2.5L H4
    Special Price $33.76 Regular Price $47.99
    E3 Spark Plugs
  47. Autolite Double Platinum Spark Plug
    4 pc Autolite Double Platinum Spark Plug for 2005-2012 Subaru Legacy
    Special Price $34.35 Regular Price $48.99
    Autolite
    Out of stock
  48. Champion Spark Plug
    4 pc Champion Double Platinum Spark Plugs for 2005-2012 Subaru Legacy 2.5L H4
    Special Price $34.41 Regular Price $48.99
    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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