911 Carrera 4 Cabriolet (996) F6-3.4L (1999)
1. Insert supporting disc and fit snap ring with special tool 9638.
2. Always replace O-ring for long-neck pipe and coat with Vaseline.
3. Uniformly tighten fastening screws for long-neck pipe in diagonally opposite sequence.
4. Fill in oil for final drive.
Tightening torques