LS - 3rd Gen (2001-2006) Discussion topics related to the flagship Lexus LS430

Spark plugs

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Old 03-20-18, 08:50 PM
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cbenoit65
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Default Spark plugs

I need to know what is the best spark plugs for 2004 Lexus LS 430 flint mica color and 94000 mileage.
Old 03-20-18, 09:03 PM
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05ls430518
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Originally Posted by cbenoit65
I need to know what is the best spark plugs for 2004 Lexus LS 430 flint mica color and 94000 mileage.
ngk iriduim plugs its what I used and my car runs fine.
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Old 03-20-18, 11:05 PM
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bradland
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Denso 3297 or NGK 4589
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Old 03-21-18, 04:59 AM
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Jabberwock
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SK20R11 Denso Iridium Long Life - about 7-8 bucks each. There may be less expensive sources but watch out for cheap fakes so check the box and plug carefully no matter where you source them. I purchased the ones below and had no issues.

https://www.amazon.com/Denso-SK20R11-Iridium-Spark-Plug/dp/B0012Q4IPY/ref=pd_cp_263_2?_encoding=UTF8&pd_rd_i=B0012Q4IPY&pd_rd_r=P89NHE35NMM2DFHDEFNN&pd_rd_w=wUXgZ&pd_rd_wg=X0ZnG&psc=1&refRID=P89NHE35NMM2DFHDEFNN&dpID=41skUf00r2L&preST=_SY300_QL70_&dpSrc=detail https://www.amazon.com/Denso-SK20R11-Iridium-Spark-Plug/dp/B0012Q4IPY/ref=pd_cp_263_2?_encoding=UTF8&pd_rd_i=B0012Q4IPY&pd_rd_r=P89NHE35NMM2DFHDEFNN&pd_rd_w=wUXgZ&pd_rd_wg=X0ZnG&psc=1&refRID=P89NHE35NMM2DFHDEFNN&dpID=41skUf00r2L&preST=_SY300_QL70_&dpSrc=detail

Last edited by Jabberwock; 03-21-18 at 05:06 AM.
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Old 03-21-18, 11:19 AM
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caverman
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SK20R11 Denso Iridium Long Life is what I just used (122k miles).

BTW: Lexus spark plug interval is 120k so not really necessary at 94k unless you want to be proactive which is understandable as well.

Second, if your DIY then be careful when pulling the spark plug wire clips out. They are hard to push in on the release and then pulling up on them without pulling on the wires, which are pretty thin. With the age and they way you have to grab them you can easily pull or rip out a wire from the clip....ask me how I know. The first LS plug change I did I had no issues, the last one I did last week I pulled the wire on one and had to replace the clip. Which if you do accidentally there are threads on here with the part numbers and what to do.
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Old 03-21-18, 11:22 AM
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caverman
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I also highly recommend this. It's worth the $14 and with all the money you'll save DIY it's no brainier.
https://www.amazon.com/gp/product/B0014ZVSVK/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1 https://www.amazon.com/gp/product/B0014ZVSVK/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1
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Old 03-21-18, 05:04 PM
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nedear1688
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Originally Posted by cbenoit65
I need to know what is the best spark plugs for 2004 Lexus LS 430 flint mica color and 94000 mileage.
How can you beat this price and factory plugs https://www.ebay.com/itm/4-pcs-TOYOT...72.m2749.l2649

It came out $5+ each. FREE shipping too.
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Old 03-21-18, 06:54 PM
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warminwisc
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How easy of a job are the plugs?
Old 03-21-18, 07:03 PM
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Originally Posted by warminwisc
How easy of a job are the plugs?
Its super easy very good task to start out with as you learn to fix your own car. Only thing to be carefull of is dont overtighten the plugs and break them in the motor, and dont drop anything down the hole when you have the plugs removed.

Last edited by 05ls430518; 03-21-18 at 07:07 PM.
Old 03-21-18, 08:03 PM
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cbenoit65
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Thank you!
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