I am getting ready to change plugs as I do a valve cover gasket repair.


I am at Rock's looking at the Iridium's and they not that the spec gap is 0.050 and yet Denso, Champion and others have the gaps at anywhere from 0.54 all the way down to 0.40.

What is the difference for a 2005 3.0 V6 S0type? What works best?

Thanks

Tom in dallas

Tom

 

Correct spark plug gap is 1.3mm to 1.45mm.(0.051 to 0.057in)

 

Most iridium spark plugs come pre gapped. Becareful Tom.

 

Do you know what you used? I assume that Bosch would do the correct ones

T

 

The original spark plugs fitted by Jaguar were Denso units. The JLR part number is C2S46895.

Cross reference the part number with other brands to ensure correct fitment and heat range.

 

https://www.sparkplug-crossreference...aguar/C2S46895

Thanks

T

 

Great site - thanks

 

I used the - imho - best spark plugs on the market for all my cars (except XJS, where they do not offer them for): Denso TT (twin tip)
And for your 3.0L S-Type the correct model is Denso IT20TT (iridium, twin tip)

PS: ...and on those Denso TT spark plugs, you do not have to worry about the gaps - the gap there is just right as it is.

 

Thank you. but according to Denso I see the following

https://www.sparkplugs.com/denso-471...-tt-spark-plug

Tom

 

Your link says: Denso IT20TT - which is exactly, what I wrote.

I have my wisdom from the Denso TT catalogue:
https://www.denso.com/global/en/prod...og_generic.pdf

page 68.

 

Not sure what to say as Denso is in disagreement in one area of their parts and in agreement in another area for the same part. Don't we just love cars!

Tom