yank30265 Posted July 31, 2010 Share Posted July 31, 2010 i bought a set of wires for my 90 ls400 and they are 5 mm. Is this OE? 5 mm seems thin to me. Quote Link to comment Share on other sites More sharing options...
SRK Posted July 31, 2010 Share Posted July 31, 2010 The stock wires are quite small in diameter, but they work just fine. Quote Link to comment Share on other sites More sharing options...
steve2006 Posted July 31, 2010 Share Posted July 31, 2010 Yes 5mm are the norm,you can fit thicker after market leads but you will have to modify/cut/remove some of the clips that route the wires so using the thinner ones makes changing them easier. On the passenger side make sure you refit the grommet where the lead from the coil passes through the plastic cover. Good tutorial below. http://www.lexls.com/tutorials/ignition/sparkplugs.html Quote Link to comment Share on other sites More sharing options...
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