03L103469AD / 04L103469 Valve Cover Diaphragm for Audi VW Skoda Seat 1.6 2.0 TDI
The 03L103469AD / 04L103469 valve cover diaphragm is a 50 mm replacement crankcase ventilation membrane for selected Audi, Volkswagen, Skoda and Seat 1.6 TDI and 2.0 TDI applications. It is designed to repair the existing valve cover ventilation unit without replacing the complete valve cover assembly.
This product is a diaphragm / membrane only. It should not be treated as a repair kit or complete valve cover assembly.
OEM / Reference Numbers
Primary OEM: 03L103469AD, 04L103469
Related / Reference Numbers:
- 04L103469P
- 04L103469D
- 04L103469Q
- 04L103475
- 04L103469A
- 05L103469D
Part Type
- Valve cover diaphragm
- Valve cover membrane
- Crankcase ventilation diaphragm
- PCV membrane
What This Part Does
This diaphragm works inside the valve cover ventilation system and helps regulate crankcase pressure. When the original membrane fails, the system can lose sealing ability and cause PCV-related symptoms.
Compatible Vehicles
- Audi A6 2019–2021
- Seat Alhambra
- Skoda Kodiaq
- Volkswagen Arteon
- Volkswagen Beetle
- Volkswagen Caddy
- Volkswagen Golf
- Volkswagen Passat
- Volkswagen Sharan
- Volkswagen Tiguan
- Volkswagen Touran
Please verify OEM number, vehicle model, engine type and valve cover design before ordering.
Engine / Engine Family / Technical Detail
- Engine focus: 1.6 TDI and 2.0 TDI
- Diaphragm diameter: 50 mm
- Part format: diaphragm / membrane only
Common Symptoms of Failure
- Whistling noise from the valve cover area
- Rough idle
- Vacuum leak symptoms
- Crankcase pressure imbalance
- Oil leak symptoms related to ventilation pressure
- Increased oil consumption
Why Choose This Replacement
- Targets exact OEM intent for 03L103469AD and 04L103469
- Supports repair of the existing valve cover ventilation unit
- Cost-effective alternative to replacing the complete valve cover
- Designed for the correct 50 mm diaphragm repair type
Important Before Ordering
- Verify OEM 03L103469AD or 04L103469 against your original part
- Compare related references where applicable
- Confirm the 50 mm diaphragm size
- Make sure you need the diaphragm only, not a repair kit or complete assembly
What does 03L103469AD / 04L103469 fit?
These numbers are used for selected Audi, Volkswagen, Skoda and Seat 1.6 TDI and 2.0 TDI valve cover diaphragm applications with the matching valve cover design.
Is 04L103469P the same type of part as 04L103469?
04L103469P is a related reference within the same valve cover diaphragm application family. Compatibility should be confirmed against the original valve cover design.
What does this valve cover diaphragm do?
It helps the valve cover ventilation system regulate crankcase pressure and maintain correct PCV operation.
What symptoms can indicate diaphragm failure?
Possible symptoms include whistling noise, rough idle, vacuum leak behavior, pressure imbalance, oil leak symptoms or increased oil consumption.
Is this a complete valve cover assembly or diaphragm only?
This product is a diaphragm / membrane only. It is not a repair kit or complete valve cover assembly.
How do I confirm compatibility before ordering?
Match OEM 03L103469AD or 04L103469 with your original valve cover, compare related references and confirm the 50 mm diaphragm design.
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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