the Delphi coils are what I've installed most recently, and I have the most confidence in them being reliable.
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
I use a BERU ZSE001 Ignition Coil, also in a '72. It's bomb-proof - zero starting issues after a lifetime (3 decades!) of bump-starting.
Only disadvantage is it doesn't like being left in the 'contact' position for long, which is not a problem for me.
Conselho: coloque bobinas originais Beru ou então Magneti Marelli. As demais bobinas pra K4M não são boas de acordo com todos os membros do Clube da Megane que precisaram fazer troca delas!
Delphi. I'm confident they're better than Bosch.
You can use either, but Delphi is OE.
Bosch Delphi eldor they’re all the same you can’t really say one is better than the other. Some go bad early that’s just what it is. I personally went with Delphi (they’re quite a bit cheaper on eBay). But the lifetime return/replacement from fcp is pretty enticing.
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.
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