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Service bulletins for the 2018 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.

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

By type

By component

By trouble code

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
No. 14-212021-05-05. Service bulletin. ENGINE AND ENGINE COOLING. Information on an extended warranty for a coolant pump and Valve block on the 911.
No. 13-212021-04-05. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. List of approved C20 style engine oils for classic and new Porsche models since 1984.
No. 09-212021-04-02. Service bulletin. ENGINE AND ENGINE COOLING. List of approved A40 style engine oils for new and classic Porsche vehicles MY 1984 and newer.
No. 08-212021-04-02. Service bulletin. ENGINE AND ENGINE COOLING. List of approved C40 engine oils for new and classic Porsche vehicles MY 1984 and newer.
No. 07-21-12021-04-02. Service bulletin. ENGINE AND ENGINE COOLING. List of approved C30 engine oils for all new and Classic Porsche vehicles MY1984 and newer.
No. 03-212021-04-02. Service bulletin. ENGINE AND ENGINE COOLING. List of approved C20 engine oils for all new and classic Porsche models 1984 and newer.
122-V9Y4C-122021-03-06. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING; EQUIPMENT. Resubmitting at request of Mr. Bernard Hardgrave. Instructions on how to correct a rattling noise from around the oil pump crankshaft drive.
No. 72-172021-02-01. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN. Instructions for reworking the fan motor in the event that the HVAC does not function.
No. 179-202021-01-05. Service bulletin. ENGINE; ELECTRICAL SYSTEM. Instructions for clearing check engine faults related to tank ventilation system.
No. 54-202021-01-05. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. List of approved A40 style engine oils for new and classic Porsche models.
No. 53-202021-01-05. Service bulletin. ENGINE AND ENGINE COOLING. List of approved C40 style engine oils for new and classic Porsche vehicles.
No. 20002020-11-06. Service bulletin. ENGINE AND ENGINE COOLING. Advanced Technical information on a NVH Lubrication kit.
No. 11-152020-10-01. Service bulletin. ELECTRICAL SYSTEM; ENGINE. Information on replacing the control unit for the auxiliary alarm system in the event of fault codes.
No. 31-202020-10-01. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION. List of approved engine oils for all Porsche models since 2003.
No. 33-202020-10-01. Service bulletin. ENGINE AND ENGINE COOLING. Overview of Approved Porsche C20 Engine Oils
No. 20142020-10-01. Service bulletin. ENGINE AND ENGINE COOLING. Information on a new bonding applicator gun for the GT2 RS.
No. 16-202020-06-01. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. List of approved A40 engine oils for all applicable vehicles as of 1984.
122-U6R4G-052020-05-05. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN. Workshop Campaign instructions for WS Campaign WLA4 - Retrofitting Heat Shield.
122-M8J3B-052020-05-04. Service bulletin. ENGINE AND ENGINE COOLING. List of approved C40 engine oils for all Porsche models since 1984.
122-F4J4K-042020-04-02. Service bulletin. ENGINE AND ENGINE COOLING. List of approved engine oils for all Porsche models.
122-M7J7N-042020-04-02. Service bulletin. ENGINE AND ENGINE COOLING. Updated instructions for reworking the coolant pipe on affected vehicles if there is a loss of coolant in the coolant pipe.
122-B7N6X-032020-03-05. Service bulletin. ENGINE AND ENGINE COOLING. Instructions for retrofitting the sport exhaust system on the 991 generation 911.
122-H9F7J-032020-03-05. Service bulletin. ENGINE AND ENGINE COOLING. Instructions for retrofitting the sport exhaust system on the 991 generation 911.
122-T9S3B-022020-02-04. Service bulletin. ENGINE AND ENGINE COOLING. List of approved C30 engine oils for all Porsche vehicles since 1984.
122-Z2X7A-022020-02-04. Service bulletin. ENGINE AND ENGINE COOLING. List of approved C20 engine oils for all Porsche vehicles since 1984.

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