Emission Control · Engine and Clutch
| System | Engine and Clutch |
| Subsystem | Emission Control |
| Assembly | Thermal Reactor |
| Thread | M8 |
| Years | 1975–1981 |
| Vehicles | 911SC, 911T/E/S |
| Confidence | Cross Referenced |
Source: Porsche 911 Workshop Manual, Section 0.2-5/2 (Tightening Torques for Engine) and pages 66-67 (reactor/heat exchanger parts diagrams)