# Service bulletin 122\-C9S9Q\-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.

- Type: Service bulletin
- NHTSA id: 10153577
- Published by NHTSA: 2019\-02\-25
- Manufacturer's number: 122\-C9S9Q\-12
- Manufacturer's date: 2018\-11\-16
- NHTSA component: WHEELS; SERVICE BRAKES, HYDRAULIC

## NHTSA's summary

Loose M6 Screws Securing PCCB Rotors to Wheel Hub

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10153577-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10153577-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Brakes, Wheels

## Vehicles listed

- 2017 to 2018 PORSCHE 911
- 2014 PORSCHE 911 GT3
- 2017 PORSCHE 911 TARGA 4

## Other bulletins for the same vehicles and component

- [SPTL2609](/bulletins/11037868.md), 2026-10-02, Service bulletin: WHEELS; STEERING; SUSPENSION. Special Tools and Equipment Information for alignment machines \- Q3 2026 Software Spec Update Available
- [SPTL2608](/bulletins/11037083.md), 2026-09-04, Service bulletin: WHEELS; SUSPENSION; STEERING. Special Tools and Equipment Information for alignment machines \- Q2 2026 Software Spec Update Available
- [40/26 4407](/bulletins/11034784.md), 2026-07-07, Service bulletin: WHEELS. Wheel Bolt Replacement Requirement \- Change from Wheel Bolts with Aluminum Washers to Wheel Bolts with Steel Washers \(40/26\)
- [109/21 4407](/bulletins/11034598.md), 2026-07-07, Service bulletin: WHEELS. Noise Symptom – Clicking Noises from the Area of the Front Axle: Observe Specified Procedure \(SY 109/21\)
- [No. 1506.2](/bulletins/11032435.md), 2026-05-07, Service bulletin: WHEELS. Instructions on advanced technical information for center\-locking wheel nut tightening.
- [No. D774](/bulletins/11030878.md), 2026-04-07, Service bulletin: WHEELS. Parts information for Parts Withdrawal \- Pressure Sensor \(9A790605201\) The cars affected are ones that use the part number mentioned.
- [No. D771](/bulletins/11030850.md), 2026-04-06, Service bulletin: WHEELS. 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.
- [No. 52\-25](/bulletins/11028374.md), 2026-02-05, Service bulletin: WHEELS. Manufacturers certificate for approved wheels and tires on the 911 GT3, 911 R, 911 GT3 RS
- [No. D752](/bulletins/11028352.md), 2026-02-05, Service bulletin: SERVICE BRAKES. Parts information for parts withdrawal involving the caliper without brake pads. The part numbers affected are in the attached PDF. The vehicles associated are cars that use the part numbers in the PDF.
- [No. D749](/bulletins/11026376.md), 2025-12-05, Service bulletin: SERVICE BRAKES. Parts information for parts withdrawal involving the brake disc 9Y0615301AJ

JSON: [/v1/bulletins/10153577](/v1/bulletins/10153577)

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