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Home >> BMW >> 2021 >> 840i 2D Convertible >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Engine Electrical System -- Repair (G14, G15, & G16) >> 12 51 Engine Wiring Harness >> 12 51 301 Remove and install/replace engine wiring harness section, ignition module cylinder 5-8 (M850i xDrive coupe/convertible/Gran Coupe sedan) >> Installing wiring harness section for ignition system of bank 2

Installing wiring harness section for ignition system of bank 2

Wiring harness section for the ignition system of cylinder bank 2 

G14262065Courtesy of BMW OF NORTH AMERICA, INC.
G15643250Courtesy of BMW OF NORTH AMERICA, INC.

Install the ignition coils of cylinder bank 2 

Precondition 

Ignition is switched off.

NOTE: RISK OF DAMAGE 
Damage to the ignition coil. 
The silicone hose of the ignition coil must not be contaminated by fuel as this can lead to failure of the ignition coil. 
  • When working on the fuel system, cover the ignition coils with suitable materials and remove where required.
  • Do not oil or grease the silicone tube of the spark plug socket. Do not  use any protection or maintenance products (e.g. silicone spray, rubber care products, rust remover, etc.).
G14261820Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work