NGK Iridium IX Spark Plug LTR6IX-11 (Box of 4) — Fits 2004-2009 GM, Mazda, Saturn Vehicles

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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About NGK

NGK engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full NGK lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

NGK Iridium IX Spark Plugs LTR6IX-11 — Performance for Enthusiasts

Unleash the full potential of your engine with NGK Iridium IX LTR6IX-11 spark plugs. Specifically engineered for the performance enthusiast, these plugs deliver outstanding acceleration, improved fuel efficiency, and exceptional durability. The advanced design ensures extreme ignitability and superior anti-fouling properties, making them ideal for demanding driving conditions.

Key Features for Enhanced Engine Response:

  • Iridium Fine Wire Center Electrode: Six times harder than platinum, providing unmatched durability and a consistent, powerful spark.
  • Tapered Cut Ground Electrode: Optimizes starting, enhances idling stability, and sharpens throttle response.
  • High Melting Point Iridium Alloy: Perfectly suited for the high-temperature demands of modern engines.
  • Exceptional Anti-Fouling: Maintains clean operation for prolonged peak performance.

This 4-pack of NGK Iridium IX spark plugs is compatible with a wide range of vehicles, including select 2004-2009 Buick Rendezvous, Cadillac SRX, CTS, STS, Mazda MX-5 Miata, CX-9, Mazda 6, and Saturn Aura models. For even greater performance, consider upgrading to NGK Ruthenium HX plugs. Find your performance upgrade at GGCRACING!

Vehicle Fitment

Years Make Model Trim
2008-2011 Buick Enclave CX
2008-2011 Buick Enclave CXL
2012-2013 Buick Enclave Base
2014-2017 Buick Enclave Convenience
2014-2017 Buick Enclave Leather
2014-2020 Buick Enclave Premium
2018 Buick Enclave Base
2018-2020 Buick Enclave Essence
2019-2020 Buick Enclave Preferred
2005-2008 Buick LaCrosse CXS
2010-2011 Buick LaCrosse CX
2010-2011 Buick LaCrosse CXL
2010-2011 Buick LaCrosse CXS
2012 Buick LaCrosse Convenience
2012-2013 Buick LaCrosse Touring
2012-2016 Buick LaCrosse Premium
2012-2016 Buick LaCrosse Base
2012-2016 Buick LaCrosse Leather
2016 Buick LaCrosse Sport Touring
2004 Buick Rendezvous CXL
2004-2005 Buick Rendezvous Ultra
2005 Buick Rendezvous CXL Plus
2006 Buick Rendezvous CX
2006 Buick Rendezvous CXL
2013-2015 Cadillac ATS Luxury
2013-2015 Cadillac ATS Performance
2013-2015 Cadillac ATS Premium
2004-2014 Cadillac CTS Base
2010-2015 Cadillac CTS Luxury
2010-2015 Cadillac CTS Performance
2010-2015 Cadillac CTS Premium
2004-2016 Cadillac SRX Base
2010-2016 Cadillac SRX Luxury
2010-2016 Cadillac SRX Performance
2010-2016 Cadillac SRX Premium
2005-2011 Cadillac STS Base
2008-2009 Cadillac STS Platinum
2013-2016 Cadillac XTS Premium
2013-2019 Cadillac XTS Base
2013-2019 Cadillac XTS Livery
2013-2019 Cadillac XTS Luxury
2013-2019 Cadillac XTS Platinum
2017-2019 Cadillac XTS Premium Luxury
2010-2015 Chevrolet Camaro LS
2010-2015 Chevrolet Camaro LT
2012-2017 Chevrolet Caprice PPV
2012 Chevrolet Captiva Sport LTZ
2012 Chevrolet Captiva Sport LT
2015-2016 Chevrolet Colorado LT
2015-2016 Chevrolet Colorado WT
2015-2016 Chevrolet Colorado Z71
2008-2009 Chevrolet Equinox Sport
2010-2016 Chevrolet Equinox LTZ
2010-2017 Chevrolet Equinox LT
2017 Chevrolet Equinox Premier
2012-2013 Chevrolet Impala LS
2012-2013 Chevrolet Impala Police
2012-2016 Chevrolet Impala LTZ
2012-2020 Chevrolet Impala LT
2017-2019 Chevrolet Impala LS

…and 134 additional fitments. Contact us to confirm yours.

Product Details

Product Description
Part Numbers
Sizing & Fit

About NGK

NGK engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full NGK lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

NGK Iridium IX Spark Plugs LTR6IX-11 — Performance for Enthusiasts

Unleash the full potential of your engine with NGK Iridium IX LTR6IX-11 spark plugs. Specifically engineered for the performance enthusiast, these plugs deliver outstanding acceleration, improved fuel efficiency, and exceptional durability. The advanced design ensures extreme ignitability and superior anti-fouling properties, making them ideal for demanding driving conditions.

Key Features for Enhanced Engine Response:

  • Iridium Fine Wire Center Electrode: Six times harder than platinum, providing unmatched durability and a consistent, powerful spark.
  • Tapered Cut Ground Electrode: Optimizes starting, enhances idling stability, and sharpens throttle response.
  • High Melting Point Iridium Alloy: Perfectly suited for the high-temperature demands of modern engines.
  • Exceptional Anti-Fouling: Maintains clean operation for prolonged peak performance.

This 4-pack of NGK Iridium IX spark plugs is compatible with a wide range of vehicles, including select 2004-2009 Buick Rendezvous, Cadillac SRX, CTS, STS, Mazda MX-5 Miata, CX-9, Mazda 6, and Saturn Aura models. For even greater performance, consider upgrading to NGK Ruthenium HX plugs. Find your performance upgrade at GGCRACING!

Vehicle Fitment

Years Make Model Trim
2008-2011 Buick Enclave CX
2008-2011 Buick Enclave CXL
2012-2013 Buick Enclave Base
2014-2017 Buick Enclave Convenience
2014-2017 Buick Enclave Leather
2014-2020 Buick Enclave Premium
2018 Buick Enclave Base
2018-2020 Buick Enclave Essence
2019-2020 Buick Enclave Preferred
2005-2008 Buick LaCrosse CXS
2010-2011 Buick LaCrosse CX
2010-2011 Buick LaCrosse CXL
2010-2011 Buick LaCrosse CXS
2012 Buick LaCrosse Convenience
2012-2013 Buick LaCrosse Touring
2012-2016 Buick LaCrosse Premium
2012-2016 Buick LaCrosse Base
2012-2016 Buick LaCrosse Leather
2016 Buick LaCrosse Sport Touring
2004 Buick Rendezvous CXL
2004-2005 Buick Rendezvous Ultra
2005 Buick Rendezvous CXL Plus
2006 Buick Rendezvous CX
2006 Buick Rendezvous CXL
2013-2015 Cadillac ATS Luxury
2013-2015 Cadillac ATS Performance
2013-2015 Cadillac ATS Premium
2004-2014 Cadillac CTS Base
2010-2015 Cadillac CTS Luxury
2010-2015 Cadillac CTS Performance
2010-2015 Cadillac CTS Premium
2004-2016 Cadillac SRX Base
2010-2016 Cadillac SRX Luxury
2010-2016 Cadillac SRX Performance
2010-2016 Cadillac SRX Premium
2005-2011 Cadillac STS Base
2008-2009 Cadillac STS Platinum
2013-2016 Cadillac XTS Premium
2013-2019 Cadillac XTS Base
2013-2019 Cadillac XTS Livery
2013-2019 Cadillac XTS Luxury
2013-2019 Cadillac XTS Platinum
2017-2019 Cadillac XTS Premium Luxury
2010-2015 Chevrolet Camaro LS
2010-2015 Chevrolet Camaro LT
2012-2017 Chevrolet Caprice PPV
2012 Chevrolet Captiva Sport LTZ
2012 Chevrolet Captiva Sport LT
2015-2016 Chevrolet Colorado LT
2015-2016 Chevrolet Colorado WT
2015-2016 Chevrolet Colorado Z71
2008-2009 Chevrolet Equinox Sport
2010-2016 Chevrolet Equinox LTZ
2010-2017 Chevrolet Equinox LT
2017 Chevrolet Equinox Premier
2012-2013 Chevrolet Impala LS
2012-2013 Chevrolet Impala Police
2012-2016 Chevrolet Impala LTZ
2012-2020 Chevrolet Impala LT
2017-2019 Chevrolet Impala LS

…and 134 additional fitments. Contact us to confirm yours.

Product Details

Product Description

About NGK

NGK engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full NGK lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

NGK Iridium IX Spark Plugs LTR6IX-11 — Performance for Enthusiasts

Unleash the full potential of your engine with NGK Iridium IX LTR6IX-11 spark plugs. Specifically engineered for the performance enthusiast, these plugs deliver outstanding acceleration, improved fuel efficiency, and exceptional durability. The advanced design ensures extreme ignitability and superior anti-fouling properties, making them ideal for demanding driving conditions.

Key Features for Enhanced Engine Response:

  • Iridium Fine Wire Center Electrode: Six times harder than platinum, providing unmatched durability and a consistent, powerful spark.
  • Tapered Cut Ground Electrode: Optimizes starting, enhances idling stability, and sharpens throttle response.
  • High Melting Point Iridium Alloy: Perfectly suited for the high-temperature demands of modern engines.
  • Exceptional Anti-Fouling: Maintains clean operation for prolonged peak performance.

This 4-pack of NGK Iridium IX spark plugs is compatible with a wide range of vehicles, including select 2004-2009 Buick Rendezvous, Cadillac SRX, CTS, STS, Mazda MX-5 Miata, CX-9, Mazda 6, and Saturn Aura models. For even greater performance, consider upgrading to NGK Ruthenium HX plugs. Find your performance upgrade at GGCRACING!

Vehicle Fitment

Years Make Model Trim
2008-2011 Buick Enclave CX
2008-2011 Buick Enclave CXL
2012-2013 Buick Enclave Base
2014-2017 Buick Enclave Convenience
2014-2017 Buick Enclave Leather
2014-2020 Buick Enclave Premium
2018 Buick Enclave Base
2018-2020 Buick Enclave Essence
2019-2020 Buick Enclave Preferred
2005-2008 Buick LaCrosse CXS
2010-2011 Buick LaCrosse CX
2010-2011 Buick LaCrosse CXL
2010-2011 Buick LaCrosse CXS
2012 Buick LaCrosse Convenience
2012-2013 Buick LaCrosse Touring
2012-2016 Buick LaCrosse Premium
2012-2016 Buick LaCrosse Base
2012-2016 Buick LaCrosse Leather
2016 Buick LaCrosse Sport Touring
2004 Buick Rendezvous CXL
2004-2005 Buick Rendezvous Ultra
2005 Buick Rendezvous CXL Plus
2006 Buick Rendezvous CX
2006 Buick Rendezvous CXL
2013-2015 Cadillac ATS Luxury
2013-2015 Cadillac ATS Performance
2013-2015 Cadillac ATS Premium
2004-2014 Cadillac CTS Base
2010-2015 Cadillac CTS Luxury
2010-2015 Cadillac CTS Performance
2010-2015 Cadillac CTS Premium
2004-2016 Cadillac SRX Base
2010-2016 Cadillac SRX Luxury
2010-2016 Cadillac SRX Performance
2010-2016 Cadillac SRX Premium
2005-2011 Cadillac STS Base
2008-2009 Cadillac STS Platinum
2013-2016 Cadillac XTS Premium
2013-2019 Cadillac XTS Base
2013-2019 Cadillac XTS Livery
2013-2019 Cadillac XTS Luxury
2013-2019 Cadillac XTS Platinum
2017-2019 Cadillac XTS Premium Luxury
2010-2015 Chevrolet Camaro LS
2010-2015 Chevrolet Camaro LT
2012-2017 Chevrolet Caprice PPV
2012 Chevrolet Captiva Sport LTZ
2012 Chevrolet Captiva Sport LT
2015-2016 Chevrolet Colorado LT
2015-2016 Chevrolet Colorado WT
2015-2016 Chevrolet Colorado Z71
2008-2009 Chevrolet Equinox Sport
2010-2016 Chevrolet Equinox LTZ
2010-2017 Chevrolet Equinox LT
2017 Chevrolet Equinox Premier
2012-2013 Chevrolet Impala LS
2012-2013 Chevrolet Impala Police
2012-2016 Chevrolet Impala LTZ
2012-2020 Chevrolet Impala LT
2017-2019 Chevrolet Impala LS

…and 134 additional fitments. Contact us to confirm yours.

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