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

Spark plug replacement.

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Old 03-09-17, 07:26 PM
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387
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Default Spark plug replacement.

When does Lexus recommend spark plug replacement?

Has anyone changed their's already? Lexus part # 90919-01249 is the part number but it looks like Denso FK20HBR11 is the same thing for less money.... but are the OEM Lexus ones pregapped? If they are, what are they gapped at?
Old 03-09-17, 10:31 PM
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dnasians
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Originally Posted by 387
When does Lexus recommend spark plug replacement?

Has anyone changed their's already? Lexus part # 90919-01249 is the part number but it looks like Denso FK20HBR11 is the same thing for less money.... but are the OEM Lexus ones pregapped? If they are, what are they gapped at?
if you're using the OEM Denso Iridium plugs DO NOT adjust the gap, they are pre-gapped. not 100% sure what the gap is, should be around 1mm

Last edited by dnasians; 03-09-17 at 10:39 PM.
Old 03-10-17, 05:11 PM
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Sasnuke
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Iridium plugs are rated for 192,000kms or 12 years...whichever comes first.
Personally I wouldn't wait that long...6 years would be a good compromise.
3 are easy to change...the other 3 need a little more work...but within the realm of possible for the DIY with some basic hand tools.
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