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Service bulletin No. 87-26

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id11037850
Published by NHTSA2026-10-02
Manufacturer's numberNo. 87-26
Manufacturer's date2026-09-29
NHTSA componentPOWER TRAIN; ENGINE

NHTSA's summary

Technical Information for Rattling Noises from Around the Rear Silencer

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, Transmission and driveline

Vehicles listed
PORSCHE 718 CAYMAN GT4 RS2024 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 718 SPYDER RS2024 (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.

Recalls for the same vehicles and component
24V3430002024-05-15. POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION (PRNDL)

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
No. 32-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of approved Porsche C40 GT engine oils
No. 31-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C40 Engine Oils
No. 30-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C20 Engine Oils
No. 29-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C30 Engine Oils
No. 36-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C40 Engine Oils
13/262026-08-06. Service bulletin. Allocation of Approved Engine Oils MY 2027 (13/26)
GR13D7902026-07-08. Other. Parts Withdrawal - Various Parts
09/26 37302026-07-07. Service bulletin. Permanent Fault Memory Entries “P1775”/“P071400”/“P184900” in Transmission Electronics Control Unit (PDK) (09/26)
20/262026-07-07. Other. Overview of Approved Porsche C20 Engine Oils (20/26)
19/26 17012026-07-07. Other. Overview of Approved Porsche C30 Engine Oils (19/26)