LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

Spark plugs

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Old 11-07-18, 09:36 AM
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Sin1UZFE
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Default Spark plugs

What’s recommended? Platinum or can I go iridium?
Old 11-07-18, 10:06 AM
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bradland
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Originally Posted by Sin1UZFE
What’s recommended? Platinum or can I go iridium?
Def Iridium
NGK or Denso
Old 11-07-18, 10:15 AM
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Fit1too
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The owner's manual calls for Iridium. Denso #SK20R11 or NGK IFR6A11. Those part numbers may have changed a little over the years.
Old 11-07-18, 12:39 PM
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Use the recommended iridium type plugs. The car will run using other plug types with varying results in performance and longevity.
Old 11-08-18, 03:36 PM
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Sin1UZFE
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Should mention I do not have the manual

But thanks guys!
Old 11-08-18, 04:12 PM
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bradland
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Originally Posted by Sin1UZFE
Should mention I do not have the manual

But thanks guys!
https://drivers.lexus.com/lexusdrive...nuals-warranty
Old 11-08-18, 04:13 PM
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Sin1UZFE
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Great, thanks!
Old 11-08-18, 05:44 PM
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You want the Iridium. I remember that the Denso plugs are the OEM recommended. These are the ones that I purchased.

https://www.rockauto.com/en/moreinfo...1356083&jsn=13
Old 11-08-18, 07:25 PM
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Originally Posted by AndrewRM
You want the Iridium. I remember that the Denso plugs are the OEM recommended. These are the ones that I purchased.

https://www.rockauto.com/en/moreinfo...1356083&jsn=13
thx.......
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