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View Full Version : Denso to NGK comparison chart


manxkiwi
3rd November 2012, 08:34
Not sure if this has been covered before? But does anyone have a chart, or a link to one, to compare Denso plug specs to other brands. Have Googled but would like to see if anyone has anything better than I have found so far.

Thanks in advance MK.
Woodman
3rd November 2012, 08:42
By "specs" what do you mean? What do the different numbers and letters refer to? X-overs from one to the other? performance?
AllanB
3rd November 2012, 08:48
http://www.ngkspark.co.nz/spark-plugs-part-finder/cross-reference

There ya go. I note they do like to promote their iridum plugs now....... IMO they are good if you have difficult access to the plugs as they last longer, otherwise are they worth the $. Could be better than a oil thread.
manxkiwi
3rd November 2012, 11:13
By "specs" what do you mean? What do the different numbers and letters refer to? X-overs from one to the other? performance?

As in: NGK CR9EK is equivalent to: Denso U27ETR. Denso has a completely different coding system.

I read somewhere (just someones opinion) that the Denso's lasted longer than NGKs in a tough environment. Eg racing. Not many shops I've found do Denso's. Just pokin' around really. Cheers.
The Lone Rider
3rd November 2012, 11:34
As in: NGK CR9EK is equivalent to: Denso U27ETR. Denso has a completely different coding system.



Most service manuals I've come across give you the codes for both brands (or NGK and some other brand)
Woodman
3rd November 2012, 17:14
As in: NGK CR9EK is equivalent to: Denso U27ETR. Denso has a completely different coding system.

I read somewhere (just someones opinion) that the Denso's lasted longer than NGKs in a tough environment. Eg racing. Not many shops I've found do Denso's. Just pokin' around really. Cheers.

The NGK book has crossovers from other brands to NGK along with a detailed diagram of what all the numbers and letters mean. I speak NGK pretty good but am hopeless with other brands.
F5 Dave
6th November 2012, 15:44
As in: NGK CR9EK is equivalent to: Denso U27ETR. Denso has a completely different coding system.

I read somewhere (just someones opinion) that the Denso's lasted longer than NGKs in a tough environment. Eg racing. Not many shops I've found do Denso's. Just pokin' around really. Cheers.
Like tyres -there are different models, economy, sports & racing. Comparing Michi touring tyres to 'Dunlops' is apples to pears.