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Service bulletin WMD4

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 id10242142
Published by NHTSA2023-09-09
Manufacturer's numberWMD4
Manufacturer's date2023-08-31
NHTSA componentPOWER TRAIN:MANUAL TRANSMISSION; POWER TRAIN

NHTSA's summary

Porsche intranet posting with information on WMD4 - workshop campaign - replacing manual transmission.

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

Transmission and driveline, Manual transmission

Vehicles listed
PORSCHE 911 CARRERA2005, 2006, 2007, 2008 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 CARRERA S2005, 2006, 2007, 2008 (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.

Other bulletins for the same vehicles and component
TB-5-052009-05-22. Service bulletin. PORSCHE: CLUTCH PEDAL DOES NOT FULLY REACH ITS ORIGINAL POSITION AFTER BEING DEPRESSED. THIS IS CAUSED BY AIR IN THE HYDRAULIC SYSTEM. *PE
03042005-01-28. Service bulletin. REVERSE GEAR CANNOT BE ENGAGED. *TC