2021-2026 Audi Q7/Q8 Pipe Part Update SM 42-2025

What is Special Notice SM 42-2025?

Audi has released Special Notice SM 42-2025, an internal communication to its parts managers and inventory staff. This notice, dated August 21, 2025, addresses a change in part numbers for a specific pipe component. The original part number, 4M0-121-131-C (Pipe), is being superseded by a new version.

The primary purpose of this circular is to manage dealer inventory effectively. It ensures that older stock of the specified pipe is returned, and only the updated component is ordered moving forward. This helps maintain the quality and accuracy of parts available for service and repairs.

Important Deadlines and Return Procedures

Audi has set a strict deadline for dealers to return the old inventory of part number 4M0-121-131-C. Dealers must return these materials to their facing Parts Distribution Center (PDC) no later than September 11, 2025. This deadline is crucial for dealers to receive credit for the returned parts and to streamline their inventory.

Dealer Return Process

To facilitate the return process, dealers are instructed to follow a specific claims procedure:

1. File a Claim: A separate "Claim with Return" must be filed, selecting "Dir Sup. Req. Return" as the item type. Dealer comments should reference the Special Notice Number SM 42-2025 and the Parts Circular number.
2. Review Delivery List: Dealers need to check "Parts On Command" the following day for the Delivery List document. Any issues or delays should be reported to their PDC.
3. Document Number: The 40000XXXXX delivery document number must be entered on a YELLOW DEPOT REQUEST RETURN label.
4. Label Adherence: The YELLOW DEPOT REQUEST RETURN label must be securely attached to the package(s) containing the returned parts.
5. Include Delivery Document: A copy of the Delivery Document must be included with the returned part(s).

Important Warning: Items returned after the September 11, 2025 deadline WILL NOT be accepted on any type of return or buyback. This emphasizes the importance of timely action for dealers.

New Part Number for Re-ordering

Moving forward, dealers are advised to re-order required new materials using the updated part number. The new part number for the pipe is 4M0-121-131-G (Pipe). This ensures that all new installations or replacements will utilize the most current version of the component.

What This Means for Audi Owners

This Special Notice SM 42-2025 is primarily an internal communication for Audi dealerships regarding parts inventory management. It does not indicate a recall or a safety defect with your current vehicle. The change from the 4M0-121-131-C (Pipe) to the 4M0-121-131-G (Pipe) likely reflects a minor revision, improvement, or supply chain update to the component. Therefore, if you own a 2021-2026 Audi Q7 or Q8, there is no immediate action required on your part.

Should your vehicle ever require a replacement for this specific pipe, the dealership will install the updated Audi Q8 pipe part number 4M0-121-131-G. This ensures that any service performed will use the latest available part from Audi. This type of update is common in the automotive industry as manufacturers continuously refine components and logistics.

Source: NHTSA ID 11022662