Oil Separator Diaphragm – Audi / VW 3.0 TFSI | OEM 06M103515H 06M103515F

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.

• Audi
• Volkswagen

Returns and exchanges

Request a change-of-mind return within 14 calendar days of delivery, then send the goods within 14 calendar days of notifying us. Our voluntary return option applies to unused, uninstalled, complete goods in their original condition and packaging. Exchanges are subject to availability and agreement.

The customer pays change-of-mind return shipping. No restocking fee applies. Refunds and original delivery charges are handled under our Refund & Return Policy and applicable law.

Faulty, damaged or incorrect goods

Email contact-us@klifex.net with your order details and a description of the problem. These claims are separate from change-of-mind returns. Where we are responsible, we bear the required remedy and return costs. Installation alone does not remove mandatory defect rights.

Your legal rights

Applicable statutory rights take precedence, including EU/EEA and UK withdrawal rights and legal guarantees. Necessary inspection does not remove a statutory withdrawal right; deductions for excessive handling must reflect an actual, evidenced loss of value.

Contact us for the correct return address before shipping. Our legal address is not a return address.

Read the full Refund & Return Policy