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Service bulletin No. 121-30

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 id10179100
Published by NHTSA2020-09-02
Manufacturer's numberNo. 121-30
Manufacturer's date2020-08-19
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE

NHTSA's summary

Instructions for replacing the turbocharger and exhaust manifold in the event of power loss in conjunction with turbocharger damage.

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, Exhaust and emissions, Exhaust manifold, pipes and muffler, Turbocharger or supercharger

Vehicles listed
PORSCHE 9112020

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
No. 210-202024-05-02. Service bulletin. Technical information for a complaint - oil leak on intake side of right turbocharger - replace intake pipe