BMW has had an ongoing problem with spark degradation through the direct ignition system. Especially a problem operating at the extreme heat conditions under the hood.
BMW assisted re-engineering of the coil by Eldor. This is the current solution. Along other things like good fit and finish.
S55 coils are a great upgrade to n54/n55 coils, and one of the best coils on the market! For stock vehicles, to any power level needed!
These will come in Original Eldor Packaging, unlike anywhere else on the market, to assure you're getting Genuine ELDOR Ignition coil.
