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NGK Iridium IX Spark Plug Box of 4 (LTR6IX)

Take your vehicle's performance to the next level with the NGK Iridium IX Spark Plug Box of 4. Designed for the performance enthusiast, these spark plugs provide outstanding acceleration, high fuel efficiency, and durability.

  • Extreme ignitability and exceptional anti-fouling
  • Tapered cut ground electrode for improved starting, idling, and throttle response
  • Iridium fine wire center electrode's durability is six times harder than platinum
  • Iridium alloy's extremely high melting point is perfect for today's engines

This product fits more vehicles than loaded. Please select your vehicle to see all fits.

Make Model Year Type
Buick Envision 2016 Premium
Buick Envision 2017 Premium
Buick Envision 2018 Premium
Buick Envision 2019 Premium
Buick Envision 2020 Premium
Buick Regal 2014 GS
Buick Regal 2014 Premium
Buick Regal 2015 Base
Buick Regal 2015 GS
Buick Regal 2015 Premium
Buick Regal 2016 Base
Buick Regal 2016 GS
Buick Regal 2016 Premium
Buick Regal 2016 Sport Touring
Buick Regal 2017 Base
Buick Regal 2017 GS
Buick Regal 2017 Premium
Buick Regal 2017 Sport Touring
Buick Regal Sportback 2018 Base
Buick Regal Sportback 2018 Essence
Buick Regal Sportback 2018 Preferred
Buick Regal Sportback 2018 Preferred II
Buick Regal Sportback 2019 Base
Buick Regal Sportback 2019 Essence
Buick Regal Sportback 2019 Preferred
Buick Regal Sportback 2019 Preferred II
Buick Regal Sportback 2020 Base
Buick Regal Sportback 2020 Essence
Buick Regal Sportback 2020 Preferred
Buick Regal TourX 2018 Base
Buick Regal TourX 2018 Essence
Buick Regal TourX 2018 Preferred
Buick Regal TourX 2019 Base
Buick Regal TourX 2019 Essence
Buick Regal TourX 2019 Preferred
Buick Regal TourX 2020 Base
Buick Regal TourX 2020 Essence
Buick Regal TourX 2020 Preferred
Cadillac ATS 2013 Base
Cadillac ATS 2013 Luxury
Cadillac ATS 2013 Performance
Cadillac ATS 2013 Premium
Cadillac ATS 2014 Base
Cadillac ATS 2014 Luxury
Cadillac ATS 2014 Performance
Cadillac ATS 2014 Premium
Cadillac ATS 2015 Base
Cadillac ATS 2015 Luxury
Cadillac ATS 2015 Performance
Cadillac ATS 2015 Premium
Cadillac ATS 2016 Base
Cadillac ATS 2016 Luxury
Cadillac ATS 2016 Performance
Cadillac ATS 2016 Premium
Cadillac ATS 2017 Base
Cadillac ATS 2017 Luxury
Cadillac ATS 2018 Base
Cadillac ATS 2018 Luxury
Cadillac ATS 2019 Base
Cadillac ATS 2019 Luxury
Cadillac CT6 2016 Base
Cadillac CT6 2016 Luxury
Cadillac CT6 2017 Base
Cadillac CT6 2017 Luxury
Cadillac CT6 2017 Plug-In
Cadillac CT6 2018 Base
Cadillac CT6 2018 Luxury
Cadillac CT6 2018 Plug-In
Cadillac CTS 2014 Base
Cadillac CTS 2014 Luxury
Cadillac CTS 2014 Performance
Cadillac CTS 2014 Premium
Cadillac CTS 2015 Base
Cadillac CTS 2015 Luxury
Cadillac CTS 2015 Performance
Cadillac CTS 2015 Premium
Cadillac CTS 2016 Base
Cadillac CTS 2016 Luxury
Cadillac CTS 2016 Performance
Cadillac CTS 2016 Premium
Cadillac CTS 2017 Base
Cadillac CTS 2017 Luxury
Cadillac CTS 2018 Base
Cadillac CTS 2018 Luxury
Cadillac CTS 2019 Base
Cadillac CTS 2019 Luxury
Chevrolet Camaro 2016 LT
Chevrolet Camaro 2017 LS
Chevrolet Camaro 2017 LT
Chevrolet Camaro 2018 LS
Chevrolet Camaro 2018 LT
Chevrolet Camaro 2019 LS
Chevrolet Camaro 2019 LT
Chevrolet Camaro 2020 LS
Chevrolet Camaro 2020 LT
Chevrolet Equinox 2018 LT
Chevrolet Equinox 2018 Premier
Chevrolet Equinox 2019 LT
Chevrolet Equinox 2019 Premier
Chevrolet Equinox 2020 LT
NGK manufactures spark plugs and spark plug wires, as well as glow plugs for diesel applications. Their range of spark plugs cover everything from OEM replacement to Ultimate Performance plugs, and are available as traditional copper, platinum, or iridium tips. NGK’s reputation as an OEM supplier for many car manufacturers makes them a top choice for spark plugs. Few brands can make that claim and have the quality to back it up.
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