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Service bulletin 122-N8C4M-12

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 id10188278
Published by NHTSA2021-03-06
Manufacturer's number122-N8C4M-12
Manufacturer's date2018-11-06
NHTSA componentEQUIPMENT; WHEELS; LATCHES/LOCKS/LINKAGES

NHTSA's summary

Resubmitting at request of Mr. Bernard Hardgrave. Advanced Technical information for center-locking wheel nut tightening.

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, Latches and locks, Wheels

Vehicles listed
PORSCHE 9112004, 2005
PORSCHE 9112012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
PORSCHE 911 (997)2005, 2006, 2007, 2008, 2009, 2010, 2011 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 918 SPYDER2015 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 918 SPYDER2016

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

Recalls for the same vehicles and component
19V8750002019-12-11. CHILD SEAT; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
14V6980002014-11-04. LATCHES/LOCKS/LINKAGES:HOOD:LATCH
12V5580002012-12-03. WHEELS:HUB; SUSPENSION:REAR:AXLE:SPINDLE
11V2850002011-06-10. WHEELS:LUGS/NUTS/BOLTS/STUDS
20111942011-05-12. Wheels

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
SPTL26092026-10-02. Service bulletin. Special Tools and Equipment Information for alignment machines - Q3 2026 Software Spec Update Available
SPTL26082026-09-04. Service bulletin. Special Tools and Equipment Information for alignment machines - Q2 2026 Software Spec Update Available
109/21 44072026-07-08. Service bulletin. Noise Symptom – Clicking Noises from the Area of the Front Axle: Observe Specified Procedure (SY 109/21)
40/26 44072026-07-07. Service bulletin. Wheel Bolt Replacement Requirement - Change from Wheel Bolts with Aluminum Washers to Wheel Bolts with Steel Washers (40/26)
109/21 44072026-07-07. Service bulletin. Noise Symptom – Clicking Noises from the Area of the Front Axle: Observe Specified Procedure (SY 109/21)
109/21 44072026-07-07. Service bulletin. Noise Symptom – Clicking Noises from the Area of the Front Axle: Observe Specified Procedure (SY 109/21)
No. 164-24-12026-06-05. Service bulletin. Technical information for Safety Pin for the Locking Unit on the Central Wheel Lock Cannot be Pressed In/Jammed: Observe Specified Procedure
No. 1506.22026-05-07. Service bulletin. Instructions on advanced technical information for center-locking wheel nut tightening.
No. D7742026-04-07. Service bulletin. Parts information for Parts Withdrawal - Pressure Sensor (9A790605201) The cars affected are ones that use the part number mentioned.
No. D7712026-04-06. Service bulletin. Parts information for Parts Withdrawal - Hub Cap. Part numbers involved are 9Y0601149F, 9Y0601149G, 9Y0601149H, 9Y0601149J, 9Y0601149L, and 9Y0601149M. The vehicles affected are ones that use the part numbers mentioned.