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Service bulletin 605

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 id10017547
Published by NHTSA2005-11-10
Manufacturer's number605
Manufacturer's date2005-09-12
NHTSA componentENGINE AND ENGINE COOLING:ENGINE

NHTSA's summary

BECAUSE OF POSSIBLE LEAKS AT THE CRANKSHAFT SEALING RING, A NEW CRANKSHAFT SEALING RINGS HAS BEEN INSTALLED IN THE ENGINES OF THE VEHICLES MENTIONED ABOVE SINCE MAY 17, 2005. *TT

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine

Vehicles listed
PORSCHE 911 CARRERA2005 (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
06V0080002006-01-12. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM

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. 28-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C40 Engine Oils. Note that this bulletin covers all models back to model year 1984, for which C40 engine oils are allocated.
No. 27-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C20 Engine Oils. Note that the bulletin covers all models back to model year 1984, for which C20 engine oils are allocated.
No. 26-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C30 Engine Oils. Note that the bulletin includes all models back to model year 1984, for which C30 engine oils are allocated.
No. 25-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche A40 Engine Oils. Note that this bulletin covers all vehicles from model year 1997 to 2020, for which A40 engine oils are assigned. Model years 1997-2001 are not available for selection in the system.
13/262026-08-06. Service bulletin. Allocation of Approved Engine Oils MY 2027 (13/26)
GR13D7902026-07-08. Other. Parts Withdrawal - Various Parts
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)
21/26 17012026-07-07. Other. Overview of Approved Porsche C40 Engine Oils (21/26)
15/26 17012026-07-07. Other. Overview of Approved Porsche A40 Engine Oils (15/26)