Ignition coil DELPHI or Bremi

AC Delco is an OEM GM parts and any coil will do pretty much personally I use Delphi ones they seem to last pretty long

I got Delphi and they work great

Delphi. I'm confident they're better than Bosch.

You can use either, but Delphi is OE.

I use Delphi on my N20 which use the same coil as N52. No problem so far.

‘03 540i original Bremi coils still rockin at 152k mi

Stock Bremi/bosch are the way to go.

Replaced all 6 coils with a set of Bremi from FCP 60k miles/9 years ago. I’ve got a new set on the way thanks to their lifetime replacement program. The customer service rep said they should be changed every 3-4 oil changes which sounds crazy to me He said I got luck they lasted 9 years. But I was expecting more like 100k not 60k. Granted I was going uphill with a full load with lights/AC/stereo all on. Probably should have lightened the electrical load but it’s never been a problem until today. SES light came on. Engine started misfiring. Pulled over immediately. Ran the codes. Got a P1353 (cylinder 6 misfire/coil).

I tested the coil and found it to be faulty (that's what I get for buying a cheap one). The first time I tested it, it seemed to be fine but that was on the truck. This time I took it off to make sure I got a good connection and sure enough it fell out of range on both of those tests....

They don’t look like OE plus they have Delphi stamped on them. I’m pretty sure Delphi is not an OEM for BMW. The tarnishing looks like rust which could be explained by the use of inferior materials.