Service bulletin 20/25 2601 update
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Service bulletin |
|---|---|
| NHTSA id | 11034600 |
| Published by NHTSA | 2026-07-07 |
| Manufacturer's number | 20/25 2601 update |
| Manufacturer's date | 2026-06-29 |
| NHTSA component | ENGINE |
| Manufacturer's system | Exhaust: Sports exhaust system |
NHTSA's summary
Sports Exhaust installation instructions.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Engine
| PORSCHE 911 | 2025, 2026 |
|---|---|
| PORSCHE 911 CARRERA | 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| WSM5 | 2026-10-02. Service campaign. Porsche intranet posting for Campaign WSM5 – Replacing engine data sticker (VECI) |
|---|---|
| No. WSM5 | 2026-10-02. Service campaign. Technical Information for Campaign WSM5 – Replacing engine data sticker (VECI) |
| No. 91-26 | 2026-10-02. Service bulletin. Technical Information for Particles/Metal Chips/Residues in Engine Oil |
| SY No. 72-26 | 2026-10-02. Service bulletin. Symptom-based workshop manual for High-Pitched “Whining” and Whistling Noises in Partial Load Operation from the Engine Area. Note that this bulletin only covers 911 Turbo S with the t-hybrid system. |
| No. 72-26 | 2026-10-02. Service bulletin. Symptom-based workshop manual for High-Pitched “Whining” and Whistling Noises in Partial Load Operation from the Engine Area. Note that this bulletin covers only 911 GTS t-hybrid models. |
| No. 32-26 | 2026-10-02. Service bulletin. Manufacturer's Certificate for Overview of approved Porsche C40 GT engine oils |
| No. 31-26 | 2026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C40 Engine Oils |
| No. 30-26 | 2026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C20 Engine Oils |
| No. 29-26 | 2026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C30 Engine Oils |
| No. 36-26 | 2026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C40 Engine Oils |