Service bulletins for the 1999 Porsche 911
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.
176 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Brakes are shown. Show all
| No. 2403 | 2024-04-03. Service bulletin. SERVICE BRAKES, HYDRAULIC. Special tools and equipment information for brake caliper pins for the 911, Boxster, and Cayman |
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| No. 1801.4 | 2022-04-05. Service bulletin. SERVICE BRAKES. Advanced technical information for a brake squeal. |
| ATIALL41605 | 2021-06-28. Service bulletin. EQUIPMENT; SERVICE BRAKES. Understanding and addressing brake squeal complaints. |
| 122-S6Q2R-06 | 2021-03-06. Service bulletin. EQUIPMENT; SERVICE BRAKES. Resubmitting at request of Mr. Bernard Hardgrave. Advanced technical information on brake fluid for all Porsche vehicles. |
| 4470 | 2002-10-29. Service bulletin. SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM. BRAKE BOSTER SEALT REPLACEMENT AT THE FIREWALL. CORRECTIONS. *TT |
| 4650 | 2002-10-25. Service bulletin. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC. CONCERNS WITH CORROSION ON THE BRAKE DISCS. *TT |
| 1101 | 2002-07-15. Service bulletin. SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM. TECHNICAL INFORMATION REGARDING BRAKE BOOSTER SEAL AT THE FIREWALL WHICH HAS CHANGED. *TT |
| 4605 | 2000-04-11. Service bulletin. SERVICE BRAKES, HYDRAULIC:POWER ASSIST. SQUEAKING OR CLICKING NOISES CAN OCCURE WHEN THE BRAKE OR CLUTCH PEDALS ARE OPERATED. YD |
| 2454 | 2000-04-10. Service bulletin. SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM:HOSES, LINES/PIPING, AND FITTINGS. RECOMMENDED PROCEDURES WHEN WORKING WITH VACUUM LINES AND HOSES. YD |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.