JCD911S

Since I'm switching exhausts soon, I'm thinking of replacing my spark plugs and coil packs since they're now 10 yrs old with 33K miles on them. I've also been getting misfire CEL's and the removal of the exhaust and headers will make them easier to access.

In looking for replacements, I've found that Porsche made an "Updated" version which appears to have a larger head and requires longer set screws (Part no. 99760210402). Does anyone know what exactly was updated and if there are any benefits to going with these $70+ each coils, as opposed to the original design Bosch or Beru for half the price?

I haven't heard of any issues or recalls pertaining to coils that would explain the "update". Maybe they're less prone to cracking or something?

jglaze

I believe cracking in cold weather conditions was the main reason for the update. They've gone through a few rounds of updates actually.

That said, I'm not aware of any performance difference; the updates were focused on reliability issues.

Rikky001

I was told by Porsche service that the coils were better molded to prevent cracking. Sounds to me a plausible explanation.

granprixweiss928

Where does everyone buy these?

also is there a reason to buy the Porsche one or the Beru one, which is cheaper.

Mark

Hilltopper

Suncoast

lurchphil

Pelican has best prices on Beru. Work great!

PelicanParts.com

Yes, the bracket was changed. Here is a side by side comparison of the old vs. the new design. Also, when we ordered new Beru's for our project each ignition coil came with new bolts and weren't needed to be purchased separately. Beru is the OEM supplier and a sufficient replacement.

http://www.pelicanparts.com/cgi-bin/...602-104-02-M47

BIG smoke

I'd try the new one. I was getting misfires too...

Atcal

I just got done replacing plugs and coils, using the "new" style thicker coils. First, dropping the mufflers is must! Even with the mufflers down, access to the back coils is almost zero. Second, the middle cylinder on the passenger side you can only use one of the bolts for the new coil. The mounting bracket for the muffler interferes with the bolt and there is no way to get it in. If I were to do the job again I would just use the "old" style coils with the shorter bolts.

jchapura

I have a 2005 C2S and just changed all (new style coil and plugs) of mine and didn't need to remove the mufflers. Car was up on QuickJacks - that helped with positioning my body for the right angle for my hand. Lots of hand cramps and lost knuckle skin but for me it was worth doing myself. Getting under one's own car is good for inspecting other things too - I found a coolant drip from a front side engine cover 99610101600 (replaced that in a different working session).

Robert Derow

so you were able to get ALL six thicker ones in? My mechanic was as well but said he had to use different flat head bolts and shave down one section on part of the turbo :/. Which is freaking me out but said it was very minimal.