Ferrari California Workshop Manual page 901

Refit the central flat undertray section (
Removing the rear flat undertray diffuser
Refitting the rear flat undertray diffuser
Fit the front flat undertray diffuser, inserting the
coolant breather pipe and the power steering
fluid breather pipe in the respective wire
guide holes.
Tighten the screws indicated.
Tightening torque
Screw
E3.12).
Undo the screws indicated.
Remove the rear flat undertray diffuser.
Nm Class
8 Nm C