JG 996T

ow, that sucks. How long/miles on 3.9 build?

you can also get green stripe bosch from FVD $42 each.

I took a picture of the Bosch when removed. Next to NGK. We”ll see how it performs longer term.

bweSteve

side note to report here (response to a number of posts back),... a week or so ago, I called my local BMW parts dept, and they looked for the Bimmer version of these Bosch Y5DDC (12129065004 which were used on the E36 M3's), and they said there are zero quantity of those plugs in any of the BMW warehouses within the CONUS.
He did also add that if he could sell them, they would be $19.99 each.

JB911

I've posted that I spoke to Bosch's US rep. They no longer make them. They are now extinct. If you can find them, great. Much cheaper to get the NGK's, sooner or later-

JB

Wonderdan

So I've got 5 y5ddc plugs, looking for one more. What Bosch plug are we supposed to move to if the y5ddc is discontinued?

JB911

There is no Bosch anymore
I do think if you need just one, rock auto has only one Y5DDC in stock-
The only dual ground electrode one available is the NGK I listed
On the other maintenance/spark plug thread discussion I posted details on the Brisk plugs after extensive searching.
I contacted them since they make so many different ones. I posted details on the other recent Y5DDC thread.
Here's their site:
https://www.briskusa.com

But, the NGK is the best choice in my opinion. Some sites are listing a Denso plug, I would avoid it-
JB

JMC376

It was a 2010 build, ~10 years and ~23k miles on it. Planning to share more on the back story and rebuild (now underway), but will do so in a separate thread.

Seconded, though it's unlikely I'll ever be 100% sure of the cause of the failure, I won't use be using them again.

Wonderdan

So it took me a few days but I got 6 total Bosche plugs... from 4 different vendors.

limitedslip

Bosch Y5DDC cross references to NGK DCPR8EKC

Wonderdan

So I got ahold of 5 Y5DDC and one vendor actually sent me the Porsche OE Bosch plug as seen in the thread above instead of the Y5DDC... is it a bad idea to run 5 of the Bosch and 1 Porsche OE

JB911

They're kind of the same, I posted the pictures, tips are different. It should be Ok, but you might be able to find just one to match-
JB

silviaks

I was in a similar boat - vendor sent me 5 blue bosch and 1 green bosch, but I still installed them, they are the same part, just different looks.

fayraree

Hi gents, appreciate all the insight! Looked up the plugs for my 2010 gt3 and sunset shows p/n: 999-170-130-90

https://www.sunsetporscheparts.com/o...ug-99917013090

I’ll call and ask if they can send a pic perhaps; don’t want to order the wrong thing!

cheers.

Wonderdan

Part#: 999-170-129-90-OEM


if you want to go budget route I’m pretty sure there are enough Y5DDC around now to buy a few here and a few there to get 6.

JB911

Some of the popular parts suppliers online like FCP and Autohaus are not listing the NGK, they have a Denso plug listed. At this point, the best and only choice in my opinion is the NGK, and they even make a Platinum version-

JB

fayraree

thanks bud, def not going budget route. Found and ordered.