11127552281 PCV Diaphragm Repair Kit for BMW N51, N52, N53
This PCV diaphragm repair kit is designed for BMW N51, N52 and N53 engines using OEM reference 11127552281. The kit includes a replacement PCV membrane and metal cap for repairing the crankcase ventilation system built into the valve cover.
It is intended for targeted repair of the existing valve cover PCV area. This product is not a complete valve cover assembly and should not be used as a replacement for the full cover.
OEM / Reference Numbers
Primary OEM number:
- 11127552281
Secondary OEM / reference numbers:
- 11127548196
- 11 12 7 552 281
- 11 12 7 548 196
Product reference:
- SKU: KL11127552281
Part Type
- PCV diaphragm repair kit
- PCV membrane and metal cap kit
- valve cover diaphragm repair kit
- crankcase ventilation repair kit
- engine breather membrane repair kit
What This Part Does
The PCV diaphragm regulates crankcase pressure and controls the flow of blow-by gases through the engine ventilation system. When the original membrane fails, the valve cover PCV system can lose correct pressure control and cause unstable engine operation.
Replacing the failed membrane and cap helps restore crankcase ventilation function while keeping the original valve cover in service.
Compatible Vehicles
This PCV diaphragm repair kit is listed for BMW vehicles with N51, N52 and N53 engine applications.
- BMW 1 Series
- BMW 3 Series
- BMW 5 Series
- BMW 6 Series
- BMW 7 Series
- BMW X1
- BMW X3
- BMW X5
- BMW Z4
Engine / Engine Family
- BMW N51
- BMW N52
- BMW N53
Common Symptoms of Failure
- rough idle
- whistling noise from the valve cover area
- vacuum leak symptoms
- increased oil consumption
- unstable crankcase pressure
- check engine light related to air mixture issues
Why Choose This Replacement
- Targets the exact repair intent for 11127552281
- Includes the PCV membrane and metal cap
- Repairs the existing valve cover PCV system
- Cost-effective alternative to replacing the complete valve cover when only the diaphragm has failed
- Helps restore crankcase ventilation and pressure control
Important Before Ordering
- Check that your original valve cover or PCV system matches 11127552281 or one of the listed reference numbers.
- Confirm that your vehicle uses a BMW N51, N52 or N53 engine.
- Compare the membrane and cap design with the PCV area of your original valve cover.
- This is a repair kit, not a complete valve cover assembly.
- Verify compatibility by OEM number, engine type and part design before ordering.
FAQ
What does BMW 11127552281 fit?
BMW 11127552281 is listed for PCV diaphragm repair on BMW N51, N52 and N53 engine applications, including selected BMW 1, 3, 5, 6, 7 Series, X1, X3, X5 and Z4 models.
Is 11127548196 related to 11127552281?
Yes. 11127548196 is listed as a related reference number for this PCV diaphragm repair application. The main repair focus remains OEM 11127552281.
What does this PCV diaphragm repair kit do?
It replaces the failed PCV membrane and cap in the valve cover crankcase ventilation system, helping restore correct crankcase pressure regulation.
What symptoms indicate PCV diaphragm failure?
Common symptoms include rough idle, whistling noise, vacuum leak symptoms, increased oil consumption, unstable crankcase pressure and check engine light related to mixture issues.
Is this a complete valve cover assembly?
No. This product is a PCV diaphragm repair kit with membrane and metal cap. It is not a complete valve cover assembly.
How do I confirm compatibility before ordering?
Confirm OEM number 11127552281 or a listed reference number, check the engine type, and compare the repair kit design with the PCV area of your original valve cover.
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