Spark Plug Wire Thickness

[yank30265]

i bought a set of wires for my 90 ls400 and they are 5 mm. Is this OE? 5 mm seems thin to me.

[SRK]

The stock wires are quite small in diameter, but they work just fine.

[steve2006]

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