EGR Cooler Bypass Flap Diaphragm - Audi / VW / Skoda / Seat - 03G131512AD

This diaphragm operates in the bypass flap valve of the EGR cooler on the listed VAG applications. Match the original EGR cooler/valve reference and diaphragm design before replacement; inspect the bypass mechanism to confirm the fault.

Applications

• Volkswagen Golf Hatchback (1K1) - 2004-2009.
• Volkswagen Golf Hatchback (5M1) - 2004-2009.
• Volkswagen Golf Estate (1K5) - 2007-2010.
• Volkswagen Golf Estate (AJ5) - 2009-2014.
• Volkswagen Touran MPV (1T1, 1T2) - 2003-2011.
• Volkswagen Passat Saloon (B6, 3C2) - 2005-2011.
• Volkswagen Passat Estate (B6, 3C5) - 2005-2011.
• Volkswagen Caddy Estate (2KB) - from 2004.
• Volkswagen Caddy Van (2KA) - from 2004.
• Volkswagen Jetta Saloon (1K2) - 2005-2011.
• Volkswagen Eos Cabriolet (1F7, 1F8) - from 2006.
• Additional brand designations: Skoda, Audi, Seat - select by the installed EGR cooler reference.

When to Inspect the Bypass Mechanism

• Starting requires a second or third attempt.
• Engine knocking during acceleration from 850 to 1700 rpm.
• Engine stalls when selecting neutral while driving.
• Loss of power, uneven running, poor response or no kickdown.

These symptoms require diagnosis of the EGR cooler bypass mechanism and engine systems; they do not prove that the diaphragm alone is faulty.

EGR Cooler and Valve References

VAG 03G131512AD, 070131512F, 070131512D, 070131512, 03G131512AA, 03G131512G. Additional reference formats: 03G131512, 103g131512ad.

Important Before Ordering

Compare the original part number, marking, shape and mounting design before ordering. A model name alone does not confirm the required version.

FAQ

Which system does this diaphragm service?

The EGR cooler bypass flap valve.

Which rpm range is mentioned for knocking?

850-1700 rpm during acceleration; diagnose the actual cause.

Is this a complete EGR cooler?

No. This product is the replacement diaphragm.

What should be matched before ordering?

The original cooler/valve reference and diaphragm design.

Part Number / PN

03G131512,070131512F,070131512D,070131512,03G131512AA,03G131512G,03G131512AD,103g131512ad

SKU: KL03G131512.

• Audi
• Seat
• SKODA
• 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