Spark Plugs

[Milan]

Anyone here used these plugs:

Denso 4030 W24ES-U Nickel U-Groove Spark Plug

They cross reference to the NGK B8ES plugs.

Have the "Hot" U-Groove

M

[m in sc]

i have. they are fine.

[Milan]

Not bad for $2.64 a piece.

https://www.densoproducts.com/denso-4030-w24es-u-nickel-u-groove-spark-plug

(10) for about $40 with shipping

[Milan]

Also found this:

https://www.chevyhhr.net/forums/2-4l-performance-tech-14/why-i-like-denso-spark-plugs-42317/

Anyone try the Dennso Platinum's?

[85RZwade]

Good article; I have always preferred NGKs, but I'v installed a LOT of Densos in power equipment over the years without any problems that I can remember. I think it's a good product.

[teazer]

I ran Denso U grooves for a while in a classic (vintage) Honda CB77 350 on methanol and never had any issues with them.

More interesting is their range of Iridium plugs for different purposes.  Obviously they think it's necessary to have different designs and perhaps for road race on long tracks or land speed the difference might be between surviving and not, but I suspect that for normal riding the difference may be undetectable.