11718511638 EGR Vacuum Actuator Membrane for BMW N47N, N47S1, B37, N57N, N57Z, N57X, B57
This EGR valve vacuum actuator membrane is designed for BMW diesel engine applications using OEM reference 11718511638. It replaces the failed diaphragm inside the EGR vacuum actuator and helps restore correct actuator movement.
This product is the membrane only. It is not a complete EGR valve, complete actuator assembly, or full emissions control unit.
OEM / Reference Numbers
Primary OEM number:
- 11718511638
Secondary actuator reference numbers:
- 11718515899
- 11718507306
- 11718576804
- 11658580072
Product reference:
- SKU: KL11718511638
Part Type
- EGR valve vacuum actuator membrane
- EGR actuator diaphragm
- vacuum actuator membrane
- EGR control diaphragm
- diesel EGR repair membrane
What This Part Does
The vacuum actuator membrane converts vacuum pressure into mechanical movement for EGR valve control. When the diaphragm tears or loses sealing ability, the actuator may no longer move the EGR mechanism correctly.
Replacing the failed membrane helps restore vacuum actuator function and supports proper EGR system operation on compatible BMW diesel engines.
Compatible Vehicles
This EGR vacuum actuator membrane is listed for BMW diesel applications using compatible N47N, N47S1, B37, N57N, N57Z, N57X and B57 engines.
- BMW N47N diesel applications
- BMW N47S1 diesel applications
- BMW B37 diesel applications
- BMW N57N diesel applications
- BMW N57Z diesel applications
- BMW N57X diesel applications
- BMW B57 diesel applications
Engine / Engine Family / Technical Detail
- BMW N47N
- BMW N47S1
- BMW B37
- BMW N57N
- BMW N57Z
- BMW N57X
- BMW B57
- Membrane diameter: 45 mm
Common Symptoms of Failure
- EGR actuator does not hold vacuum
- EGR control fault symptoms
- poor engine response
- unstable diesel engine operation
- check engine light related to EGR control
- incorrect exhaust gas recirculation operation
- vacuum leak symptoms at the actuator
Why Choose This Replacement
- Targets the exact repair intent for 11718511638
- Repairs the failed membrane inside the existing EGR vacuum actuator
- Uses a 45 mm diaphragm for the compatible actuator design
- Cost-effective alternative to replacing the complete actuator or EGR valve when only the membrane has failed
- Helps restore EGR actuator vacuum control
Important Before Ordering
- Check that your original actuator reference matches 11718511638 or one of the listed related numbers.
- Confirm that your vehicle uses a compatible BMW diesel engine listed for this membrane.
- Compare the 45 mm membrane design with the diaphragm installed in your original actuator.
- This product is an EGR vacuum actuator membrane only, not a complete EGR valve or actuator assembly.
- Verify compatibility by OEM number, engine type and part design before ordering.
FAQ
What does BMW 11718511638 fit?
BMW 11718511638 is listed for EGR valve vacuum actuator membrane repair on compatible BMW N47N, N47S1, B37, N57N, N57Z, N57X and B57 diesel engine applications.
Is 11718515899 related to 11718511638?
11718515899 is listed as a related actuator reference number for this EGR vacuum actuator membrane application. The main repair focus remains OEM 11718511638.
What does this EGR vacuum actuator membrane do?
The membrane allows the vacuum actuator to convert vacuum pressure into movement for EGR valve control.
What symptoms indicate EGR actuator membrane failure?
Common symptoms include failure to hold vacuum, EGR control faults, poor engine response, check engine light and incorrect exhaust gas recirculation operation.
Is this a complete EGR valve assembly?
No. This product is the EGR vacuum actuator membrane only. It is not a complete EGR valve or complete actuator assembly.
How do I confirm compatibility before ordering?
Confirm OEM reference 11718511638 or a listed related actuator number, check the engine type, and compare the 45 mm membrane with your original actuator 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