This time is very short: Which ignition coils can be used for N43/N53 series engines?
a. A long time ago, when these engines were created, Bosch was a supplier of the ignition coils. Code of the ignition coil: 0 221 504 471. These ignition coils are of excellent quality, and the price is relatively low.
b. During the after-warranty period, Delphi took over the supply of the ignition coils. The code of these ignition coils: is GN10476-12B1. These coils are of not-so-good quality; more read here.
c. The current BMW code: is 12137559842. True, though, the coil sold by BMW is of a strongly higher price: around EUR 100/piece. Quality problems: 1:1, as previously mentioned, Delphi ignition coils.
All available catalogs indicate around 26+ (!) different analogs. As analogs, the following items are listed: Bosch (*801), NGK, Denckermann, ERA (2 variants), Mobiletron, EGT, Engitech, Beru, Magneti Marelli, EPS, Meat & Doria, Hoffer (2 variants), HUCO (2 variants), Maxgear, Kamoka, FAE; Bremi (2 versions), VEMO (2 versions), HELLA, ESEN, Metzger, Febi Bilstein.
Unfortunately, all these “analogs” are intended for the “regular” engines (typically – not even for DI petrol engines, but the old type – port injection – ones). These ignition coils CAN NOT BE USED in N43/N53 series engines.
Misfires confirmed by using:
a. Bosch 0 221 504 801
b. NGK 48147
Short summary: Only 3 types of ignition coils can be used in N43/N53 series engines:
a. BMW 12137559842
b. Bosch 0 221 504 471
c. Delphi GN10476-12B1
Also read: Sports ignition coils