11617531423 PCV Membrane for BMW M54, M52TU
This PCV membrane is designed for BMW M54 and M52TU engines using OEM reference 11617531423. It replaces the worn rubber diaphragm inside the crankcase ventilation valve and helps restore correct CCV / PCV system operation.
The membrane is intended for targeted repair of the existing crankcase ventilation valve. It is not a complete crankcase ventilation valve, complete oil separator, or full breather assembly.
OEM / Reference Numbers
Primary OEM number:
- 11617531423
Secondary OEM / reference numbers:
- 7531423
- 11617501566
- 11611432558
- 11617533400
Product reference:
- SKU: KL11617531423
Part Type
- PCV membrane
- CCV diaphragm
- crankcase ventilation valve membrane
- oil separator membrane
- engine breather diaphragm
- BMW M54 PCV repair component
What This Part Does
The PCV membrane controls crankcase ventilation pressure and helps regulate the flow of blow-by gases through the engine breather system. When the original rubber diaphragm wears out, the valve can no longer maintain correct pressure and airflow.
Replacing the failed membrane helps restore the function of the crankcase ventilation valve while keeping the existing housing in service.
Compatible Vehicles
This PCV membrane is listed for BMW M54 and M52TU crankcase ventilation applications.
Oil separator / valve system applications for 11617531423:
- BMW 1' E87
- BMW 3' E90
- BMW 3' E91
- BMW 5' E60
- BMW 5' E61
- BMW 6' E63
- BMW 6' E64
- BMW 7' E65
- BMW 7' E66
- BMW Z4 E85
- BMW Z4 E86
Related control valve applications:
- BMW 3' E46
- BMW 5' E39
- BMW 5' E60
- BMW 5' E61
- BMW 7' E65
- BMW 7' E66
- BMW X3 E83
- BMW X5 E53
- BMW Z3 E36
- BMW Z4 E85
Engine / Engine Family / Technical Detail
- BMW M54
- BMW M52TU
- Replacement rubber PCV / CCV membrane
- Designed for crankcase ventilation valve repair
Common Symptoms of Failure
- difficult engine starting
- unstable idle
- rough engine operation
- increased oil consumption
- incorrect crankcase ventilation pressure
- vacuum leak symptoms
- oil separator or CCV valve malfunction symptoms
Why Choose This Replacement
- Targets the exact repair intent for 11617531423
- Replaces the worn rubber membrane inside the existing crankcase ventilation valve
- Cost-effective alternative to replacing the complete valve when only the membrane has failed
- Helps restore CCV / PCV valve function
- Supports repair of BMW M54 and M52TU crankcase ventilation systems
Important Before Ordering
- Check that your original crankcase ventilation valve or oil separator reference matches 11617531423 or one of the listed reference numbers.
- Confirm that your vehicle uses a BMW M54 or M52TU engine application.
- Compare the membrane shape and installation design with the diaphragm in your original valve.
- This product is a PCV membrane only, not a complete crankcase ventilation valve or oil separator assembly.
- Verify compatibility by OEM number, engine type and original part design before ordering.
FAQ
What does BMW 11617531423 fit?
BMW 11617531423 is listed for PCV membrane repair on BMW M54 and M52TU crankcase ventilation applications, including compatible BMW E87, E90, E91, E60, E61, E63, E64, E65, E66 and Z4 E85/E86 applications.
Is 11617501566 the same type of reference as 11617531423?
11617501566 is listed as a related control valve reference on this product page. The main SEO and repair focus remains the PCV membrane for OEM reference 11617531423.
What does this BMW PCV membrane do?
The membrane regulates crankcase ventilation pressure and helps control blow-by gas flow through the CCV / PCV valve system.
What symptoms indicate PCV membrane failure on BMW M54 or M52TU engines?
Common symptoms include difficult starting, unstable idle, rough engine operation, increased oil consumption, incorrect crankcase pressure and CCV valve malfunction symptoms.
Is this a complete crankcase ventilation valve?
No. This product is the replacement PCV membrane / CCV diaphragm only. It is not a complete crankcase ventilation valve, complete oil separator or full breather assembly.
How do I confirm compatibility before ordering?
Confirm the original part reference number, check that your engine is BMW M54 or M52TU, and compare the replacement membrane with the diaphragm installed in your existing crankcase ventilation valve.
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