Porsche 911 GT3 Cup 2018 Techical Manual page 166

Use the special tools (sleeve and mandrel no. 29) to mount the shaft

sealing ring. Important: Use only the rubber hammer!
2.10.17
Secure the coupling part and the shaft sealing ring with the locking ring as

shown in the picture.
Important: Ensure that the locking ring is seated correctly!
2.10.18
Version: 4/20/2018
Powertrain
911 GT3 Cup (991 II)
MY 2018
165