11127555212 PCV Membrane Repair Kit for BMW N46N, N46K, N46T
This PCV membrane repair kit is designed for BMW N46N, N46K and N46T engines using valve cover reference 11127555212. It repairs the crankcase gas ventilation diaphragm area and helps restore correct PCV pressure regulation.
The product is intended for targeted repair of the existing valve cover PCV system. It is not a complete valve cover assembly.
OEM / Reference Numbers
Primary OEM / valve cover reference number:
- 11127555212
Secondary OEM / reference numbers:
- 11128645888
- 11127553171
Product reference:
- SKU: KL11127555212
Part Type
- PCV membrane repair kit
- crankcase ventilation valve repair kit
- crankcase gas ventilation diaphragm
- valve cover diaphragm repair kit
- engine breather membrane repair component
What This Part Does
The PCV membrane regulates pressure inside the crankcase and controls the flow of blow-by gases through the engine breather system. When the membrane fails, the ventilation system may no longer keep correct crankcase pressure.
Replacing the failed membrane helps restore crankcase ventilation function, reduce oil vapor issues and support stable idle operation.
Compatible Vehicles
This PCV membrane repair kit is listed for BMW vehicles with N46N, N46K and N46T engine applications.
- BMW 1 Series E81, E82, E87, E88
- BMW 3 Series E46, E90, E91, E92, E93
- BMW 5 Series E60, E61
- BMW X1 E84
- BMW X3 E83
- BMW Z4 E85, E86
Engine / Engine Family
- BMW N46N
- BMW N46K
- BMW N46T
Common Symptoms of Failure
- rough or unstable idle
- oil consumption
- oil mist in the intake system
- oil leaks caused by incorrect crankcase pressure
- PCV fault symptoms
- vacuum leak symptoms
Why Choose This Replacement
- Targets the exact repair intent for 11127555212
- Repairs the failed PCV membrane in the existing valve cover
- Cost-effective alternative to replacing the complete valve cover when only the diaphragm has failed
- Helps restore crankcase pressure regulation and ventilation function
- Suitable for BMW N46N, N46K and N46T PCV repair applications
Important Before Ordering
- Check that your original valve cover reference matches 11127555212 or one of the listed reference numbers.
- Confirm that your vehicle uses a compatible BMW N46N, N46K or N46T engine.
- Compare the repair kit design with the PCV diaphragm area of your original valve cover.
- This product is a PCV membrane repair kit, not a complete valve cover assembly.
- Verify compatibility by OEM number, engine type and part design before ordering.
FAQ
What does BMW 11127555212 fit?
BMW 11127555212 is listed for PCV membrane repair on compatible BMW N46N, N46K and N46T engine applications, including selected 1 Series, 3 Series, 5 Series, X1, X3 and Z4 models.
Is 11128645888 related to 11127555212?
11128645888 is listed as a related reference number for this PCV repair application. The main repair focus remains valve cover reference 11127555212.
What does this PCV membrane repair kit do?
It repairs the crankcase gas ventilation diaphragm area and helps restore correct PCV pressure regulation in the valve cover system.
What symptoms indicate PCV membrane failure on BMW N46 engines?
Common symptoms include rough idle, oil consumption, oil mist in the intake, oil leaks, PCV fault symptoms and vacuum leak symptoms.
Is this a complete valve cover assembly?
No. This product is a PCV membrane repair kit for the valve cover ventilation area. It is not a complete valve cover assembly.
How do I confirm compatibility before ordering?
Confirm OEM reference 11127555212 or a listed related number, check the engine type, and compare the repair kit design with your original valve cover PCV area.
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