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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 Laser Iridium
    4 pc NGK Laser Iridium Spark Plugs for 2013-2019 Subaru Legacy 2.5L H4
    Special Price $77.25 Regular Price $109.99
    NGK / NTK
  2. NGK Standard
    4 pc NGK Standard Spark Plugs for 1995-2009 Subaru Legacy 2.2L 2.5L H4
    Special Price $22.05 Regular Price $30.99
    NGK / NTK
  3. NGK Spark Plug
    4 pc NGK Ruthenium HX Spark Plugs for 2013-2019 Subaru Legacy 2.5L H4
    Special Price $54.52 Regular Price $77.99
    NGK / NTK
  4. Autolite Platinum Spark Plug
    4 pc Autolite Platinum Spark Plug for 1996-2009 Subaru Legacy 2.5L H4
    Special Price $23.03 Regular Price $32.99
    Autolite
  5. E3 Spark Plug
    4 pc E3 Spark Plugs for 2013-2015 Subaru Legacy 2.5L H4
    Special Price $33.71 Regular Price $47.99
    E3 Spark Plugs
  6. Bosch Spark Plug
    4 pc Bosch Double Platinum Spark Plugs for 1990-2004 Subaru Legacy 2.2L 2.5L H4
    Special Price $35.41 Regular Price $50.99
    Bosch
  7. Bosch Spark Plug
    4 pc Bosch Double Platinum Spark Plugs for 2004-2009 Subaru Legacy 2.5L H4
    Special Price $35.41 Regular Price $50.99
    Bosch
  8. Autolite Iridium XP Spark Plug
    4 pc Autolite Iridium XP Spark Plug for 1996-2009 Subaru Legacy 2.5L H4
    Special Price $36.66 Regular Price $51.99
    Autolite
  9. NGK Laser Platinum
    4 pc NGK Laser Platinum Spark Plugs for 2000-2001 Subaru Legacy 2.5L H4
    Special Price $38.74 Regular Price $54.99
    NGK / NTK
  10. E3 Spark Plug
    6 pc E3 Spark Plugs for 2008-2015 Subaru Legacy 3.0L 3.6L H6
    Special Price $45.94 Regular Price $65.99
    E3 Spark Plugs
  11. DENSO Spark Plug
    4 pc DENSO Double Platinum Spark Plugs for 1990-2009 Subaru Legacy 2.2L 2.5L H4
    Special Price $46.82 Regular Price $66.99
    DENSO
  12. DENSO Spark Plug
    6 pc DENSO Standard U-Groove Spark Plugs for 2008-2017 Subaru Legacy 3.0L 3.6L H6
    Special Price $46.93 Regular Price $66.99
    DENSO
  13. DENSO Spark Plug
    4 pc DENSO Iridium TT Spark Plugs for 2005-2012 Subaru Legacy 2.5L H4
    Special Price $47.96 Regular Price $68.99
    DENSO
  14. Bosch Spark Plug
    6 pc Bosch Double Iridium Spark Plugs for 2008-2009 Subaru Legacy 3.0L H6
    Special Price $62.60 Regular Price $88.99
    Bosch
  15. DENSO Spark Plug
    6 pc DENSO Iridium TT Spark Plugs for 2008-2017 Subaru Legacy 3.0L 3.6L H6
    Special Price $68.17 Regular Price $96.99
    DENSO
  16. NGK Laser Iridium
    4 pc NGK Laser Iridium Spark Plugs for 2010-2012 Subaru Legacy 2.5L H4
    Special Price $77.59 Regular Price $110.99
    NGK / NTK
  17. Champion Copper Plus Spark Plug
    4 pc Champion Copper Plus Spark Plugs for 1996-2009 Subaru Legacy 2.5L H4
    Special Price $17.16 Regular Price $24.99
    Champion
  18. Champion Spark Plug
    4 pc Champion Copper Plus Spark Plugs for 2011-2012 Subaru Legacy 2.5L H4
    Special Price $17.81 Regular Price $24.99
    Champion
  19. Bosch Spark Plug
    4 pc Bosch Nickel Copper Spark Plugs for 1990-2004 Subaru Legacy 2.2L 2.5L H4
    Special Price $17.82 Regular Price $24.99
    Bosch
    Out of stock
  20. Champion Spark Plug
    4 pc Champion Copper Plus Spark Plugs for 1990-2010 Subaru Legacy 2.2L 2.5L H4
    Special Price $17.93 Regular Price $25.99
    Champion
  21. 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
  22. Champion Spark Plug
    4 pc Champion Copper Plus Spark Plugs for 2005-2012 Subaru Legacy 2.5L H4
    Special Price $18.98 Regular Price $26.99
    Champion
  23. Autolite Copper Core Spark Plug
    4 pc Autolite Copper Core Spark Plugs for 1990-2012 Subaru Legacy 2.2L 2.5L H4
    Special Price $19.16 Regular Price $26.99
    Autolite
    Out of stock
  24. NGK Standard
    4 pc NGK Standard Spark Plugs for 1990-2003 Subaru Legacy 2.2L 2.5L H4
    Special Price $19.40 Regular Price $27.99
    NGK / NTK
  25. NGK V-Power
    4 pc NGK V-Power Spark Plugs for 2004 Subaru Legacy 2.5L H4
    Special Price $20.58 Regular Price $28.99
    NGK / NTK
  26. NGK V-Power
    4 pc NGK V-Power Spark Plugs for 1990-2012 Subaru Legacy 2.2L 2.5L H4
    Special Price $21.34 Regular Price $29.99
    NGK / NTK
  27. NGK V-Power
    4 pc NGK V-Power Spark Plugs for 1995-2009 Subaru Legacy 2.2L 2.5L H4
    Special Price $21.34 Regular Price $29.99
    NGK / NTK
  28. Champion Spark Plug
    4 pc Champion Platinum Spark Plugs for 1991-1994 Subaru Legacy 2.2L H4
    Special Price $22.14 Regular Price $31.99
    Champion
  29. Autolite Platinum Spark Plug
    4 pc Autolite Platinum Spark Plug for 1990-2012 Subaru Legacy 2.2L 2.5L H4
    Special Price $22.46 Regular Price $31.99
    Autolite
    Out of stock
  30. Champion Spark Plug
    4 pc Champion Platinum Spark Plugs for 1996-2009 Subaru Legacy 2.5L H4
    Special Price $22.69 Regular Price $31.99
    Champion
  31. Autolite Platinum Spark Plug
    4 pc Autolite Platinum Spark Plug for 2005-2012 Subaru Legacy
    Special Price $23.14 Regular Price $32.99
    Autolite
    Out of stock
  32. Champion Spark Plug
    4 pc Champion Platinum Spark Plugs for 1990-2012 Subaru Legacy 2.2L 2.5L H4
    Special Price $23.69 Regular Price $33.99
    Champion
  33. 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
  34. Champion Spark Plug
    6 pc Champion Copper Plus Spark Plugs for 2008-2019 Subaru Legacy 3.0L 3.6L H6
    Special Price $24.72 Regular Price $34.99
    Champion
  35. NGK G-Power
    4 pc NGK G-Power Spark Plugs for 1990-2012 Subaru Legacy 2.2L 2.5L H4
    Special Price $25.06 Regular Price $35.99
    NGK / NTK
  36. NGK G-Power
    4 pc NGK G-Power Spark Plugs for 1995-2009 Subaru Legacy 2.2L 2.5L H4
    Special Price $25.53 Regular Price $35.99
    NGK / NTK
  37. 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
  38. Bosch Spark Plug
    4 pc Bosch Platinum Spark Plugs for 1990-2004 Subaru Legacy 2.2L 2.5L H4
    Special Price $26.23 Regular Price $36.99
    Bosch
  39. DENSO Spark Plug
    4 pc DENSO Platinum TT Spark Plugs for 1990-2010 Subaru Legacy 2.2L 2.5L H4
    Special Price $27.90 Regular Price $39.99
    DENSO
  40. Champion Copper Plus Spark Plug
    4 pc Champion Copper Plus Spark Plugs for 2013-2019 Subaru Legacy 2.5L H4
    Special Price $28.36 Regular Price $40.99
    Champion
  41. 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
  42. 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
  43. Champion Spark Plug
    4 pc Champion Double Platinum Spark Plugs for 2005-2012 Subaru Legacy 2.5L H4
    Special Price $31.53 Regular Price $44.99
    Champion
  44. Champion Spark Plug
    4 pc Champion Double Platinum Spark Plugs for 2011-2012 Subaru Legacy 2.5L H4
    Special Price $31.69 Regular Price $44.99
    Champion
  45. E3 Spark Plug
    4 pc E3 Spark Plugs for 1996-2009 Subaru Legacy 2.5L H4
    Special Price $32.80 Regular Price $46.99
    E3 Spark Plugs
  46. Autolite Double Platinum Spark Plug
    4 pc Autolite Double Platinum Spark Plug for 2013-2019 Subaru Legacy 2.5L H4
    Special Price $32.83 Regular Price $46.99
    Autolite
    Out of stock
  47. 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
  48. Autolite Double Platinum Spark Plug
    4 pc Autolite Double Platinum Spark Plug for 1996-2009 Subaru Legacy 2.5L H4
    Special Price $32.93 Regular Price $46.99
    Autolite
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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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