JCW Spark Plugs ...............
 

Last week, I received OEM new spark plugs. The part number on the box is 12 12 0 035 933. Curiously, the porcelain is stamped as "champion 12ZR-6SP03. There are different numbers and digits stamped on the metal part with also "Made in France".

Is there anybody who can confirm I have the right parts for the N18 JCW engine before doing the job?

I am asking because the Cooper S plugs look different from pictures and don't need service as early as the JCW 20-30K interval.

With that OEM MINI part number they looks like the Base ( NON S) MINI Cooper plugs for a N12 engine.


https://www.ecstuning.com/Mini-2013-...gine/Ignition/

Your plugs OEM Part 12122293697 or 12ZR6-SPP2 -1 or 12ZR-6SPP2-1

Did you get them from us? Looks like oem used to be beru and they switched to Champion of France.

No. I will have to call the vendor. I may have the wrong ones.

This is also strange I received 10 instead of 4 and the packing slip was from a large BMW/Mini dealer from NY state.

But...... something tells me they may also be right as a superseded part number being 12ZR-6SP03 that probably identify a different BMW supplier from the last 3 digits.

Ok, let us know what you find.

I am surprised you don't know since you sell OEM parts.

Anyway, I removed the old ones and they are the same Champion. The new ones are without the 3 blue rings on the porcelain.

Bottom line, for those who own a JCW, changing the spark plugs at 20K instead of 30K as recommended by the manufacturer is not a luxury. They were OK but I understand now why they replaced them twice during the factory maintenance. So it's the 3rd set from new now.

Also.......
 

Where can I find replacement for the clip-on covers protecting the ignition coil wires over the valve cover? There is no reference to these parts in Real OEM.

I know, but MINI likes to do supersessions and then they don't update the etk nor anything else and release bulletin internal. Only when there is a massive change over do they update the etk or i just randomly come across it.

I have not found the separate part number for that cover. I know its not part of a new valve cover,. If i did and find it i will post up, I am guessing its part of the wire harness.

They are Champion plugs. I went with NGK on my last N18 car and switched back to Champion OEM plugs

I'm curious why you switched back to Champion. NGK not worth the extra cost?

It was on my old N18, but IIRC all 3 or 4 plugs failed within 1,000 miles. Luckily no damage was caused, but they were torqued to spec, but the plug itself broke and would spin freely on the base.

Talked to a shop and they said during that time they got a lot of bad NGK plugs as well. Went to OE Champion from the dealer had zero issues.

Thanks for the information.