06M103515H / 06M103515F Oil Separator Diaphragm for Audi VW 3.0 TFSI
06M103515H and 06M103515F are OEM reference numbers for the oil separator diaphragm used in selected Audi and Volkswagen 3.0 TFSI engines. This diaphragm is designed as a repair solution for the crankcase ventilation / oil separator unit and helps restore proper pressure regulation, stable idle and correct engine operation.
If the original membrane becomes torn, hardened or loses elasticity, the crankcase ventilation system may stop working correctly. In practice, this can lead to vacuum leaks, unstable idle, incorrect air-fuel balance, increased oil consumption and unusual noise from the oil separator area. Replacing the failed diaphragm is a targeted way to repair the problem without replacing the complete assembly when the housing itself is still usable.
OEM / Reference Numbers
- 06M103515H
- 06M103515F
- 06M198542
- 06M103A01
- 06M103495P
- 9A710349511
Part Type
- Oil separator diaphragm
- PCV membrane
- Crankcase ventilation diaphragm
What This Part Does
The diaphragm is an internal working element of the oil separator / PCV system. Its job is to help regulate crankcase pressure and maintain proper engine ventilation. When this membrane fails, the system may begin drawing unmetered air, which affects engine behavior and can create secondary drivability issues.
This replacement diaphragm is intended for repair of the existing separator unit. It is suitable for owners and workshops looking for a practical and cost-effective way to restore the function of the original PCV / oil separator system in compatible 3.0 TFSI applications.
Compatible Vehicles
This diaphragm is suitable for selected Audi and Volkswagen models equipped with the 3.0 TFSI engine, including:
- Audi A5 / S5 Cabriolet
- Audi A5 / S5 Coupe / Sportback
- Audi A6 / Avant
- Audi A6 / S6 / Avant quattro
- Audi A7 Sportback
- Audi A8
- Audi A8 / S8 quattro
- Audi Q5 / Sportback
- Audi Q7
- Audi Q8
- Audi RS4 / Avant quattro
- Audi RS5 Coupe / Sportback
- Volkswagen Touareg
Engine Family
- 3.0 TFSI
Common Symptoms of a Failed Oil Separator Diaphragm
- Unstable or rough idle
- Whistling or abnormal noise from the oil separator area
- Vacuum leak symptoms
- Incorrect air-fuel mixture behavior
- Increased oil consumption
- Higher fuel consumption in some cases
Why Choose This Repair Solution
- Exact-fit diaphragm solution for selected 3.0 TFSI applications
- Helps restore proper crankcase ventilation function
- Can reduce symptoms associated with a failed separator membrane
- Suitable for targeted repair instead of replacing the full assembly
- Relevant for Audi and VW 3.0 TFSI vehicles listed on the product page
Important Before Ordering
Please compare your original part number with 06M103515H or 06M103515F before purchase. Also verify compatibility by vehicle model, engine type and reference number. If your application uses one of the related OEM numbers listed above, check the separator design carefully before ordering.
FAQ
What does 06M103515H fit?
06M103515H is an OEM reference number for an oil separator diaphragm used in selected Audi and Volkswagen 3.0 TFSI applications including Audi A5, S5, A6, A7, A8, Q5, Q7, Q8, RS4, RS5 and Volkswagen Touareg.
Is 06M103515F the same type of part as 06M103515H?
Yes. This product is presented as one diaphragm solution for OEM reference numbers 06M103515H and 06M103515F. Related numbers include 06M198542, 06M103A01, 06M103495P and 9A710349511.
What are the symptoms of a failed oil separator diaphragm?
Typical symptoms include unstable idle, extra air entering the system, increased fuel and oil consumption, and unusual noise in the oil separator area.
Is this a full oil separator assembly?
No. This product is a diaphragm / membrane repair solution for the crankcase ventilation or oil separator unit, not a complete housing assembly.
Which engines is this diaphragm intended for?
This diaphragm is intended for selected Audi and Volkswagen vehicles with the 3.0 TFSI engine.
How do I check if this part is correct for my car?
Match your original OEM number against 06M103515H, 06M103515F and the related reference numbers shown on the page, then verify your vehicle model and engine compatibility before ordering.
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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