PDT Posted February 21, 2010 Share Posted February 21, 2010 I have a 2001 LS430 that just hit 120K miles. Manual says it's time to change the spark plugs. What type of plug do I buy to replace the originals. Thanks. Quote Link to comment Share on other sites More sharing options...
1990LS400 Posted February 21, 2010 Share Posted February 21, 2010 The factory installed Denso iridium spark plugs on my 2000 LS400 were replaced a couple of weeks ago at the 120,000 mile service. As I reported, the old plugs appeared to be in excellent condition and were replaced with the same plugs: http://us.lexusownersclub.com/forums/index...c=62539&hl= You could buy a cheaper plug but another set of Iridium plugs will be good for another 120,000 miles. Cheaper plugs probably wouldn't. Quote Link to comment Share on other sites More sharing options...
killerFatty Posted February 22, 2010 Share Posted February 22, 2010 Iridium all the way!!! Denso or NGK are the best. Or if you have DEEP pockets you could try the pulstar plugs. I have always wanted to see some one drop $25 per plug. LOL Quote Link to comment Share on other sites More sharing options...
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