BMW N55 & S55 B58 Ignition Coil Upgrade Kit
Upgrade BMW N55 and S55 ignition performance with a B58 coil-on-plug conversion kit built around USA-made billet aluminum brackets, longer coil boots, and an optional plug-and-play harness.
Important: B58 ignition coils are not included. This kit supplies the conversion hardware; you provide six compatible B58 coils.
Why upgrade?
- B58 coils are reported by Nexsys to produce 2.3x the energy output of stock N55/S55 coils.
- Longer spark duration than the Precision Raceworks N55 coil setup.
- Coil-on-plug layout removes the need for extra spark plug wires.
- Uses the stock coil mounting area for strong clearance around top-mount turbo setups.
- Stock engine cover fits with this kit.
Included
- 3 USA-made billet aluminum coil brackets
- 6 longer ignition coil boots
- Plug-and-play connector harness made and assembled in the USA when that variant is selected
BMW fitment
Draft fitment generated from Kies Vehicle Fitment Database v2.xlsx. Scope: US-market BMW vehicles with N55 or S55 engine-family data. Mixed N55/B58 rows should be confirmed by engine before purchase.
| Years |
Model |
Chassis |
Engine |
| 2011-2013 |
BMW 135i |
E82/E88 |
N55B30 |
| 2014-2016 |
BMW M235i |
F22/F23 |
N55B30O0 |
| 2016-2018 |
BMW M2 |
F87 |
N55B30T0 |
| 2019-2021 |
BMW M2 Competition |
F87 |
S55B30 |
| 2020 |
BMW M2 CS |
F87 |
S55B30 |
| 2011-2015 |
BMW 335i/xDrive |
E90/E92/E93, F30/F34 |
N55B30 / N55B30M0 |
| 2015-2018 |
BMW M3 and M3 CS |
F80 |
S55B30 |
| 2014-2016 |
BMW 435i/xDrive |
F32/F33/F36 |
N55B30M0 |
| 2015-2020 |
BMW M4, M4 Competition, M4 GTS, M4 CS |
F82/F83 |
S55B30 |
| 2011-2016 |
BMW 535i/xDrive |
F10/F07 |
N55B30 |
| 2013-2015 |
BMW X1 xDrive35i |
E84 |
N55B30 |
| 2011-2017 |
BMW X3 xDrive35i |
F25 |
N55B30 |
| 2011-2018 |
BMW X5 35i/xDrive35i |
E70/F15 |
N55B30 |
Before ordering
- Fits BMW N55 and S55 engines, including early E-series N55 cars.
- B58 coils are sold separately. Nexsys lists compatible OE part numbers 12138643360, 12138678438, 12138647463, and 12137619385.
- Confirm your engine code if your model year overlaps a mixed N55/B58 chassis row.
FAQ
Does this kit include B58 ignition coils?
No. The kit does not include B58 coils.
Does it fit early E-series N55 cars?
Yes. Nexsys states the kit fits all N55 and S55 engines, including early E-series cars.
Which variant should I choose?
Choose Plug and Play for the complete connector harness. Choose Connectors and Terminals if you plan to assemble or integrate the wiring yourself.
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