Crankcase Ventilation Membrane – VAG / Audi VW Skoda 2.5 TDI | OEM 046198475B 353102176

353102176 / 046198475B / 046103527A Crankcase Ventilation Membrane for Audi VW Skoda 2.5 TDI

The 353102176 / 046198475B / 046103527A crankcase ventilation membrane is a replacement PCV diaphragm for selected Audi, Volkswagen and Skoda 2.5 TDI applications. This 84 mm membrane is designed to restore the function of the existing crankcase ventilation unit without replacing the complete assembly.

This product is a membrane / diaphragm only. It is intended for targeted repair of the original ventilation unit and should not be treated as a complete valve cover, complete oil separator or full breather assembly.

OEM / Reference Numbers

Primary OEM: 353102176, 046198475B, 046103527A

Related / Reference Numbers: No additional reference numbers are explicitly confirmed for this product.

Part Type

• Crankcase ventilation membrane
• PCV diaphragm
• Breather membrane
• 2.5 TDI ventilation diaphragm

What This Part Does

This membrane works inside the crankcase ventilation system. It helps the breather unit regulate pressure and maintain correct operation. When the original diaphragm becomes damaged, the ventilation system can lose sealing ability and may create pressure imbalance in the engine crankcase.

Compatible Vehicles

• Audi 100
• Audi A4
• Skoda Superb
• Volkswagen Passat

Please verify OEM number, engine type and crankcase ventilation unit design before ordering.

Engine / Engine Family / Technical Detail

• Engine focus: 2.5 TDI
• Membrane diameter: 84 mm
• Part format: membrane / diaphragm only

Common Symptoms of Failure

• Whistling noise from the crankcase ventilation area
• Oil leak symptoms caused by pressure imbalance
• Unstable idle
• Increased oil consumption
• Vacuum leak symptoms

Why Choose This Replacement

• Targets exact OEM intent for 353102176, 046198475B and 046103527A
• Supports repair of the existing crankcase ventilation unit
• Cost-effective alternative to replacing the full unit
• Designed for the correct 84 mm diaphragm repair type

Important Before Ordering

• Verify OEM 353102176, 046198475B or 046103527A against your original part
• Confirm your 2.5 TDI application
• Check the 84 mm membrane diameter
• Make sure you need the membrane only, not a complete ventilation assembly

• SKODA
• 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