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Service bulletins for the 1998 Porsche 911

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.

146 on file from NHTSA, as of 2026-10-19.

By type

By component

Only bulletins with component: Suspension are shown. Show all

Bulletins, newest first
No. 89-112022-04-05. Service bulletin. SUSPENSION. Technical information - adjust values for suspension alignment: using current values and observing specifcations.
STB4145-152021-06-28. Service bulletin. SUSPENSION:REAR:SHOCK ABSORBER; SUSPENSION:FRONT:SHOCK ABSORBER. As of 1994 up to 1998 Replacement shock absorbers (strut inserts) the respective chassis no longer available.
STB47-162021-06-28. Service bulletin. SUSPENSION:REAR:SHOCK ABSORBER; SUSPENSION:FRONT:SHOCK ABSORBER. Replacing shock absorbers (Strut inserts)
122-N7T9K-052018-05-21. Service bulletin. EQUIPMENT; SUSPENSION:FRONT:SPRINGS:COIL SPRINGS. Subject: Replacing the coil spring on the front axle during repairs Information: Coil spring for the respective chassis no longer available. Notes: During repairs, the faulty coil spring will be replaced by a new coil spring of similar design. A spring plate (compensation part)may also have to be used (see Part Info table). The new coil spring has the same function as the coil spring installed in the vehicle. A faulty coil spring must always be replaced on both sides of the axle. Existing sets containing a coil spring that is no longer available will be interpreted into new sets. Parts Info: The table below shows how the old coil springs (sets) are interpreted into the new coil springs (sets) and which spring plate (compensation part) may also have to be used:
122-J8G5Z-092017-09-14. Service bulletin. SUSPENSION:FRONT:SHOCK ABSORBER; SUSPENSION:REAR:SHOCK ABSORBER. Information: Shock absorber for the respective chassis no longer available

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.