11128579962 PCV Valve Cover Membrane for BMW B47B, B47D, B47F
This PCV valve cover membrane is designed for BMW B47B, B47D and B47F diesel engine applications using OEM reference 11128579962. It replaces the failed diaphragm in the valve cover crankcase ventilation system and helps restore correct pressure regulation.
This product is the membrane only. It is not a complete valve cover assembly or complete crankcase ventilation valve.
OEM / Reference Numbers
Primary OEM / valve cover reference number:
- 11128579962
Alternative BMW OEM format:
- 11 12 8 579 962
Product reference:
- SKU: KL11128579962
Part Type
- PCV valve cover membrane
- valve cover diaphragm
- crankcase ventilation membrane
- engine breather diaphragm
- oil separator membrane
What This Part Does
The valve cover membrane regulates crankcase pressure and controls blow-by gas flow through the PCV system. When the diaphragm fails, the crankcase ventilation system can lose pressure balance and cause ventilation-related engine symptoms.
Replacing the failed membrane helps restore the function of the existing valve cover PCV system while avoiding replacement of the full valve cover assembly.
Compatible Vehicles
This PCV valve cover membrane is listed for BMW B47B, B47D and B47F diesel engine applications.
- BMW G20 applications with compatible B47 engine configuration
- BMW G30 applications with compatible B47 engine configuration
- BMW B47B diesel applications
- BMW B47D diesel applications
- BMW B47F diesel applications
Engine / Engine Family / Technical Detail
- BMW B47B
- BMW B47D
- BMW B47F
- Membrane diameter: 54 mm
Common Symptoms of Failure
- incorrect crankcase pressure
- rough or unstable idle
- increased oil consumption
- whistling or suction noise from the valve cover area
- oil vapor issues in the intake system
- vacuum leak symptoms
Why Choose This Replacement
- Targets the exact repair intent for 11128579962
- Replaces the failed 54 mm membrane inside the existing valve cover
- Cost-effective alternative to replacing the complete valve cover when only the diaphragm has failed
- Helps restore crankcase ventilation and pressure control
- Suitable for BMW B47 diesel valve cover PCV repair
Important Before Ordering
- Check that your original valve cover reference matches 11128579962 or 11 12 8 579 962.
- Confirm that your vehicle uses a compatible BMW B47B, B47D or B47F diesel engine.
- Compare the 54 mm membrane design with the diaphragm in your original valve cover.
- This product is a PCV membrane only, not a complete valve cover assembly.
- Verify compatibility by OEM number, engine type and part design before ordering.
FAQ
What does BMW 11128579962 fit?
BMW 11128579962 is listed for PCV valve cover membrane repair on compatible BMW B47B, B47D and B47F diesel engine applications.
Is 11 12 8 579 962 the same as 11128579962?
Yes. 11 12 8 579 962 is the spaced BMW OEM format of the same reference number 11128579962.
What does this BMW B47 valve cover membrane do?
The membrane regulates crankcase pressure and controls blow-by gas flow through the valve cover PCV system.
What symptoms indicate PCV membrane failure on BMW B47 engines?
Common symptoms include incorrect crankcase pressure, unstable idle, increased oil consumption, whistling noise, oil vapor issues and vacuum leak symptoms.
Is this a complete valve cover assembly?
No. This product is the PCV valve cover membrane only. It is not a complete valve cover assembly.
How do I confirm compatibility before ordering?
Confirm OEM reference 11128579962, check that your engine belongs to the BMW B47 family, and compare the 54 mm membrane with your original diaphragm.
Read All
Orders ship within 1–2 business days.
Standard delivery:
- USA: Some items ship from our US warehouse and arrive within 3 business days.
- USA-EU: 10–21 business days
- Worldwide: 14–30 business days
Shipping cost is shown at checkout.
Can I exchange or return an item?
Yes, you can exchange or return an item within 14 days of purchase. This right is guaranteed to you by the Law on the Protection of Consumer Rights
To use this feature, please make sure that:
- the product was not in use and has no traces of use: scratches, chips, abrasions, etc.
- the goods are fully completed and the integrity of the packaging is not violated
- retained all labels and factory markings