Crankcase Ventilation Unit Membrane – BMW M57 / M57N / M57N2 / M47 / M47N2 | OEM 11127793163
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Regular price
$16.00
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$16.00
Regular price
$20.00
Delivery within the USA
Ships from Miami, FL when the ordered quantity is available in our US warehouse.
USPS Ground Advantage / FedEx
US delivery: typically 2–5 business days after dispatch
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11127793163 Ventilation Unit Membrane for BMW M57, M57N, M57N2, M47, M47N2
This ventilation unit membrane is designed for BMW diesel engines using OEM reference 11127793163. It replaces the worn internal diaphragm in the crankcase ventilation unit and helps restore proper pressure control on BMW M57 and M47 engine family applications.
This product is the membrane only. It is intended for repair of the existing ventilation unit and is not a complete crankcase ventilation assembly.
OEM / Reference Numbers
Primary OEM number:
- 11127793163
Secondary OEM / reference numbers:
- 11127799224
- 11127789822
- 11127781465
- 11127794597
- 11127794175
- 11127791552
- 11122249678
- 11127799225
- 11152248284
Product reference:
- SKU: KL11127793163
Part Type
- ventilation unit membrane
- crankcase ventilation diaphragm
- PCV membrane
- engine breather membrane
- oil separator diaphragm
What This Part Does
The crankcase ventilation membrane controls pressure inside the ventilation unit and supports proper blow-by gas separation. When the diaphragm wears out or tears, crankcase pressure may become unstable and oil vapor control can deteriorate.
Replacing the failed membrane helps restore the function of the existing ventilation unit without replacing the complete assembly.
Compatible Vehicles
This membrane is listed for BMW diesel applications using M57, M57N, M57N2, M47 and M47N2 engine family ventilation units.
- BMW M57 diesel applications
- BMW M57N diesel applications
- BMW M57N2 diesel applications
- BMW M47 diesel applications
- BMW M47N2 diesel applications
Engine / Engine Family / Technical Detail
- BMW M57
- BMW M57N
- BMW M57N2
- BMW M47
- BMW M47N2
- Membrane diameter: 60 mm
Common Symptoms of Failure
- incorrect crankcase pressure
- increased oil consumption
- oil vapor issues in the intake system
- rough or unstable idle
- oil leaks caused by pressure imbalance
- whistling or suction noise from the ventilation unit area
Why Choose This Replacement
- Targets the exact repair intent for 11127793163
- Replaces the failed membrane in the existing ventilation unit
- Uses a 60 mm diaphragm for compatible BMW diesel ventilation units
- Cost-effective alternative to replacing the full crankcase ventilation assembly
- Helps restore crankcase pressure control and breather function
Important Before Ordering
- Check that your original ventilation unit matches 11127793163 or one of the listed reference numbers.
- Confirm that your vehicle uses a compatible BMW M57 or M47 diesel engine.
- Compare the membrane diameter and shape with the diaphragm installed in your original ventilation unit.
- This product is a membrane only, not a complete ventilation unit.
- Verify compatibility by OEM number, engine family and part design before ordering.
FAQ
What does BMW 11127793163 fit?
BMW 11127793163 is listed for ventilation unit membrane repair on compatible BMW M57, M57N, M57N2, M47 and M47N2 diesel engine applications.
Is 11127799224 related to 11127793163?
Yes. 11127799224 is listed as a related reference number for this crankcase ventilation unit application. The main repair focus of this product is the membrane for 11127793163.
What does this ventilation unit membrane do?
The membrane helps regulate crankcase pressure inside the ventilation unit and supports correct blow-by gas management in the engine breather system.
What symptoms indicate ventilation membrane failure?
Common symptoms include incorrect crankcase pressure, increased oil consumption, oil vapor issues, rough idle, oil leaks and whistling or suction noise from the ventilation unit.
Is this a complete ventilation unit?
No. This product is the ventilation unit membrane only. It is not a complete crankcase ventilation assembly.
How do I confirm compatibility before ordering?
Confirm OEM reference 11127793163 or a listed related number, check the engine family, and compare the 60 mm membrane design with your original part.
Read All
Delivery within the USA
Ships from Miami, FL when the ordered quantity is available in our US warehouse.
USPS Ground Advantage / FedEx
US delivery: typically 2–5 business days after dispatch
Ships from Ukraine
Orders outside the USA ship from Ukraine, even when the product is in stock in Miami.
Delivery to USA & Europe
Usually 10–14 calendar days after dispatch
Delivery to other countries
Usually 10–28 calendar days after dispatch
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Delivery estimates exclude processing. Holidays, customs clearance and carrier delays may extend transit times. Shipping costs are shown at checkout.
Returns and exchanges
Request a change-of-mind return within 14 calendar days of delivery, then send the goods within 14 calendar days of notifying us. Our voluntary return option applies to unused, uninstalled, complete goods in their original condition and packaging. Exchanges are subject to availability and agreement.
The customer pays change-of-mind return shipping. No restocking fee applies. Refunds and original delivery charges are handled under our Refund & Return Policy and applicable law.
Faulty, damaged or incorrect goods
Email contact-us@klifex.net with your order details and a description of the problem. These claims are separate from change-of-mind returns. Where we are responsible, we bear the required remedy and return costs. Installation alone does not remove mandatory defect rights.
Your legal rights
Applicable statutory rights take precedence, including EU/EEA and UK withdrawal rights and legal guarantees. Necessary inspection does not remove a statutory withdrawal right; deductions for excessive handling must reflect an actual, evidenced loss of value.
Contact us for the correct return address before shipping. Our legal address is not a return address.