Cooling Fan and Alternator · Engine and Clutch
| System | Engine and Clutch |
| Subsystem | Cooling Fan and Alternator |
| Assembly | Fan Housing |
| Thread | M6 |
| Years | 1972–1981 |
| Vehicles | 911SC, 911T/E/S |
| Confidence | Factory Verified |
Source: Porsche 911 Workshop Manual, Section 0.2-5/3 (Tightening Torques for Engine)