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In this video, we'll replace the spark plugs of an E91 318i with an N43 engine.
It's very similiar with an N46 etc. The N43 uses direct petrol injection, which is why the spark plug well is slightly curved. It is necessary to use an extension angle so that the spark plugs are not damaged. This is not necessary for the N46.
Spark plug faces (german) : bit.ly/2jHkgYx
Preparations: Remove Air Cabin Filter
• BMW E90 N46 Zündspulen...
####N43####
Service interval: After every 3rd oil change
Part numbers:
➥ Spark plugs: 12120038349 (e.g. NGK 91785 amzn.to/2FHlCPV )
Tools:
➥ Allen key size 6 (ignition coil cover)
➥ Socket wrench, extension
➥ Angle
➥ (extra thin walled!) size 14 spark plug socket
####N46####
Service interval: 100.000km
Part numbers:
➥ Spark plugs: 12122158252 (e.g. NGK 4294 amzn.to/2DK7iTY)
Tools:
➥ Socket wrench, extension
➥ size 16 spark plug socket
Cost of repair: 40EUR
Difficulty: Easy
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