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      03-19-2024, 04:31 PM   #5
tranquility
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Drives: 2011 Z4 sDrive 35i
Join Date: Aug 2007
Location: Montréal

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Quote:
Originally Posted by KennyP View Post
Coils cost around 200 eur for all 6.
Bosch is original that came from factory and is maybe a tiny bit cheaper... but is weaker and more prone to issues...
BMW itself have upgraded their coils parts multiple times...
BMW switched from Bosch to Delphi coils and then later again to Eldor branded coils.. each time quality, coil weight went up...
BMW parts catalogue lists Eldor as the most current replacement part...

Price difference between them is small so get the latest that is available to you.
My car is running Delphi coils...

Stock Bosch sparkplug is around 10 eur a piece... iridium stuff costs more... but thats for tuned cars.. with them you get into 1 or 2 step colder plugs.. and they have to be gapped aswell...

Also did i really read it right? over 300K km on the odometer? this must be one of the highest mileage e89-s out there doesnt it?
Tx for the info, this is not my forte so it's good to try to gain some knowledge. I replaced my sparkplugs 5x times and the fuel injectors once. The ignition coils were never replaced before and I read that if the sparkplugs need replacing, I don't have to replace the coils, but my indy is recommending that I should replace the coils too since they are OEM: what do you guys think?

Ya, I'm probably up there in mileage, 306,000kms/190,000miles, a tech was shocked he had to check my odometer twice. Knock wood, it has been quite the journey w my white baby.

Thanks everyone for any guidance.
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