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Service bulletin 122-H4A4P-05

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 id10159680
Published by NHTSA2019-05-13
Manufacturer's number122-H4A4P-05
Manufacturer's date2019-04-05
NHTSA componentPOWER TRAIN; EQUIPMENT

NHTSA's summary

Replacing manual transmission that did not have reinforced gears with one that does.

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

Equipment and accessories, Transmission and driveline

Vehicles listed
PORSCHE 718 CAYMAN2016

Listing a model year does not mean every vehicle of it is concerned: the document says which.