IS - 3rd Gen (2014-present) Discussion about the 2014+ model IS models

NGK iridium vs OEM Denso Spark Plugs

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Old Aug 13, 2019 | 01:09 PM
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Default NGK iridium vs OEM Denso Spark Plugs

Been going back and forth and have gotten mixed reviews on which one to get.

What do you guys recommend? I am at 73,000 miles on my 2015 IS350.
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Old Aug 13, 2019 | 02:33 PM
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Originally Posted by JNP1227
Been going back and forth and have gotten mixed reviews on which one to get.

What do you guys recommend? I am at 73,000 miles on my 2015 IS350.
It honestly shouldn’t matter as they are both iridium but I always go OEM just to play it safe. They are both really good Japanese brands.
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Old Aug 13, 2019 | 11:44 PM
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NGK iridium are good to go, I ran them on my 600whp supra and had no brake ups, of course make sure your gapped properly
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Old Aug 14, 2019 | 05:04 AM
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I heard NGK dont last as long as the OEM Denso ones. Is that true?
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Old Aug 14, 2019 | 06:35 AM
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Originally Posted by JNP1227
I heard NGK dont last as long as the OEM Denso ones. Is that true?
They're both top shelf
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Old Sep 6, 2024 | 02:32 PM
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Default Iridium sparkplug

Originally Posted by TonyN
NGK iridium are good to go, I ran them on my 600whp supra and had no brake ups, of course make sure your gapped properly
Keep in mind that one Cannot change the Gap on Iridium sparkplugs. Lexus says the Gap is: 0.043" or 1.1mm.
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