Description
BMW B58 Gen1 PCV Breather Diaphragm – Genuine OEM Repair Kit (11121025447)
A known weak spot in the BMW B58 Gen1 engine is the PCV breather diaphragm, which can degrade, crack, and cause various issues over time. Common symptoms include:
- Blue smoke from the exhaust
- Increased oil consumption
- Rough idle or hesitation
- Check engine light and fault codes
- Loss of boost pressure
If left unaddressed, this issue can lead to reduced engine performance and further damage. This genuine OEM repair kit (11121025447) restores proper breather system function and prevents additional problems.
Compatibility:
- 1-Series (F20 LCI, F21 LCI) – M140i, M140iX
- 2-Series (F22, F22 LCI, F23, F23 LCI) – M240i, M240iX
- 3-Series (F30 LCI, F31 LCI, F34 GT LCI) – 340i, 340iX
- 4-Series (F32, F32 LCI, F33, F33 LCI, F36, F36 LCI) – 440i, 440iX
- 5-Series (G30, G31, G38) – 540i, 540iX, 540Li
- 6-Series (G32 GT) – 640i, 640iX
- 7-Series (G11, G12) – 740i, 740Li, 740iX, 740LiX
- X3 (G01) – M40iX
- X4 (G02) – M40iX
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