079103245M / 079103245J Oil Separator Membrane for Audi A8 S8 VW Touareg 4.2L
The 079103245M / 079103245J oil separator membrane is a replacement diaphragm for selected VAG 4.2L applications. This part is designed to repair the existing oil separator unit used on specific Audi A8, Audi A8/S8 quattro and Volkswagen Touareg vehicles.
This product is a membrane only, not a complete oil separator assembly. It is intended for situations where the original diaphragm has become cracked, stiff or torn and no longer maintains proper system operation.
OEM / Reference Numbers
Primary OEM: 079103245M, 079103245J
Related / Reference Numbers: No additional reference numbers are explicitly confirmed for this product.
Part Type
- Oil separator membrane
- Oil separator diaphragm
- PCV diaphragm replacement
- Crankcase ventilation membrane
What This Part Does
This membrane works inside the oil separator / crankcase ventilation system and helps the unit maintain proper sealing and pressure regulation. When the original diaphragm hardens, cracks or tears, the system can no longer operate correctly. Replacing the membrane helps restore the function of the existing separator without replacing the whole assembly.
Compatible Vehicles
- Audi A8 2010–2013 Europe
- Audi A8 / S8 quattro 2010–2013 Europe
- Audi A8 / S8 quattro 2010–2013 USA
- Volkswagen Touareg 2011–2018 Europe
- Volkswagen Touareg 2011–2018 USA
Please verify OEM number, vehicle application and oil separator design before ordering.
Engine / Engine Family / Technical Detail
- Engine focus: 4.2L
- Membrane diameter: 69 mm
- Part format: membrane / diaphragm only
Common Symptoms of Failure
- Problems with ignition
- Jolts at idle
- Increased fuel consumption
- Increased oil consumption
- Whistling noise caused by a torn diaphragm
Why Choose This Replacement
- Targets the exact 079103245M / 079103245J replacement intent
- Supports repair of the existing oil separator unit
- Cost-effective alternative to replacing the complete assembly
- Built for the correct membrane-only repair type
Important Before Ordering
- Verify OEM number 079103245M or 079103245J against your original part
- Check that your vehicle matches the listed model range and years
- Confirm 4.2L application and membrane design before ordering
- Make sure you need the membrane only, not the complete oil separator assembly
What does 079103245M / 079103245J fit?
This membrane is used for selected Audi A8, Audi A8 / S8 quattro and Volkswagen Touareg 4.2L applications within the listed year ranges.
Is 079103245J the same type of part as 079103245M?
Yes. 079103245M and 079103245J refer to the same oil separator membrane replacement type for this application group.
What does this oil separator membrane do?
The membrane helps the oil separator and crankcase ventilation system maintain correct sealing and pressure control.
What symptoms indicate failure?
Possible symptoms include ignition problems, jolts at idle, increased fuel or oil consumption and whistling noise when the diaphragm is torn.
Is this a complete oil separator assembly or membrane only?
This product is a membrane only. It is intended to repair the existing oil separator rather than replace the complete assembly.
How do I confirm compatibility before ordering?
Match OEM 079103245M or 079103245J with your original part and confirm the 69 mm membrane design before ordering.
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