various coil packs for 997.1 C2S? which number?

[floatingkiwi]

Hi All

 

I have a 2005 997.1 C2S down under. 65000km. Very good dry conditions, NZ new car so no salt/rust etc.

  Just replaced the sparkplugs and found the 3 coils on the left hand bank have hairline cracks in them, nothing like some of the photos I have seen and not giving any issues but probably need to be replaced.

Now, these part numbers are:

On my car: 996 602 102 00 (short bolt)

Supposed to be from the parts Katalog (short bolt): 997 602 104 00

From Pelican parts (long bolt version): 997 602 104 02

 

So my first question is:

Can I replace only the left 3 (and I guess it has to be at least 3) with the modern part number? (short or long bolt)

 

And: are the short and long bolt versions any better/worse then each other?  I.e stay with short bolt or not.

And: why does my car appear to have 996 coil packs on it??? (which are even older than the 2005 997 parts katalog number), 996 602 104 00

 

Thanks

[Loren]

Your car likely has 996 coil packs because most the engine (and production) in 2005 was the 996.

The 997.1 and 996 share many more parts than Porsche would like you to think.

 

The latest part for coil packs for your car is: 997 602 104 02.

You will also need the shorter bolts 900 385 025 01 - two per coil pack.

 

I do not know why you can mix them - they should read the same resistance.

But then if 3 are cracked how long before the other three crack? The car is 11 years old and if it were my car I would replace them all.