03G103469K / 03G103475B Valve Cover Diaphragm for Audi A4 A6 2.0 TDI
The 03G103469K / 03G103475B valve cover diaphragm is a replacement PCV membrane for Audi 2.0 TDI applications using the crankcase ventilation system integrated into the valve cover. This 77 mm diaphragm is designed to restore the function of the existing ventilation unit without replacing the complete valve cover assembly.
This product is a diaphragm / membrane only. It is intended to repair the existing crankcase ventilation system inside the valve cover and should not be treated as a repair kit or a complete valve cover assembly.
OEM / Reference Numbers
Primary OEM: 03G103469K, 03G103475B
Related / Reference Numbers:
- 03G103469B
Part Type
- Valve cover diaphragm
- PCV membrane
- Crankcase ventilation diaphragm
- 2.0 TDI valve cover membrane
What This Part Does
This diaphragm works inside the crankcase ventilation system integrated into the valve cover. When the original membrane becomes worn, torn or loses flexibility, the PCV system may no longer regulate pressure correctly. Replacing the diaphragm helps restore the function of the existing valve cover ventilation unit in a targeted and cost-effective way.
Compatible Vehicles
- Audi A4 B7 2005–2008
- Audi A6 C6 / 4F 2005–2008
Please verify OEM number, vehicle model, production year and valve cover design before ordering.
Engine / Engine Family / Technical Detail
- Engine focus: 2.0 TDI
- Engine codes: BKD, AZV, BMN, BUY
- Diaphragm diameter: 77 mm
- Part format: diaphragm / membrane only
Common Symptoms of Failure
- Whistling noise from the valve cover area
- PCV-related pressure imbalance
- Oil leak symptoms linked to a failed breather membrane
- Need to repair the existing valve cover ventilation unit instead of replacing the complete assembly
Why Choose This Replacement
- Targets exact OEM search intent for 03G103469K and 03G103475B
- Supports repair of the existing valve cover ventilation unit
- Cost-effective alternative to replacing the complete valve cover assembly
- Designed for the correct 77 mm membrane repair type
Important Before Ordering
- Verify OEM 03G103469K or 03G103475B against your original part
- Check related reference 03G103469B where applicable
- Confirm your engine code, vehicle model and valve cover design before ordering
- Make sure you need the diaphragm only, not a repair kit or complete valve cover assembly
What does 03G103469K / 03G103475B fit?
This valve cover diaphragm is listed for Audi A4 B7 2005–2008 and Audi A6 C6 / 4F 2005–2008 with 2.0 TDI engines.
Is 03G103469B the same type of part as 03G103469K?
Yes. 03G103469B is a related OEM reference within the same valve cover diaphragm family as 03G103469K and 03G103475B.
What does this valve cover diaphragm do?
It helps the crankcase ventilation system regulate pressure inside the valve cover unit. A damaged diaphragm can reduce sealing quality and affect normal PCV operation.
What symptoms can indicate diaphragm failure?
Typical signs can include whistling noise, PCV-related pressure imbalance, oil leak symptoms, or the need to repair the existing valve cover ventilation unit instead of replacing the complete assembly.
Is this a complete valve cover assembly or diaphragm only?
This product is a diaphragm / membrane only. It is intended to repair the existing valve cover ventilation unit rather than replace the complete valve cover assembly.
How do I confirm compatibility before ordering?
Match OEM 03G103469K or 03G103475B with your original valve cover, compare related reference 03G103469B if needed, and verify your vehicle model, year, engine code and valve cover design 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