Part number 930-123-191-04 is a Porsche Turbocharger Exhaust Gasket (turbo outlet to muffler/catalytic converter) that fits classic Porsche 911 Turbo (930) and 964 Turbo models from 1975 through 1994. Porsche later superseded this part number with the current active revision, 930-123-191-05.
- Porsche 911 Turbo / 930 (1975–1977). Fits 3.0L Turbo Carrera models.
- Porsche 911 Turbo / 930 (1978–1989). Fits 3.3L Turbo and Turbo Carrera models.
- Porsche 911 / 964 Turbo (1991–1994). Fits both 3.3L (1991–1992) and 3.6L (1993–1994) Turbo models.
Function & Replacement Details
- Sealing Location. It mounts between the turbocharger exhaust outlet flange and the rear muffler/silencer or catalytic converter.
- Quantity Required. Depending on the specific exhaust configuration (such as dual-outlet or catalyst-equipped setups), vehicles typically require one to two gaskets.