Diagram For Parts Identification

parts ID

This diagram may be found in the Porsche parts catalog covering the '74 through the '89 911. See list of references for info on this catalog.
Listing all the parts in this diagram for all years would consume a prohibitve amount of space, but the major parts are:

1 - Fuel distributor
9 - Aux air valve
10 - Aux air regulator
15 - Deceleration Valve
20 - Throttle position regulator or Throttle switch
24 - Thermal Valve
27 - Warm-up or Control Pressure Regulator

NOTE: The above diagram contains more than a single model year's parts.


Which USA year model has which part?

Component 

Model year 

  73.5 74 75 76 77 78 79 80 81 82 83
                       
Fuel Pump All---->                    
Accumulator All---->                    
Fuel filter All---->                    
Fuel distributor All---->                    
Airflow assembly All---->                    
Injectors All---->                    
Fuel lines All---->         <-- P* M* -->    
Decel valve All---->                    
Cold start injector All---->                    
WUR (non-vacuum) x x                  
WUR (vacuum)     x x x x x        
Throttle regulator x x                  
Throttle sw (cold start) x x x                
Hand throttle x x x                
Thermotime switch   x x x x x x x x x x
Aux air valve       x x x x x x x x
Aux air regulator     x x x x x x x x x
Vacuum switch         x x x        
O2 sensor               x x x x
Lambda electronics box               x x x x
Frequency valve               x x x x
Throttle switch 1               x x x x
Enrichment relay                 x x x
Throttle switch 2                 x x x
Temperature switch 1               x x x x
Temperature switch 2                 x x x
                       
* Plastic, Metal 
For the part numbers for specific year models, see cross-reference.
Look at photos under "Components" to see physical differences in parts.

Which Euro year model has which part?

Component 

Model year 

  73.5 74 75 76 77 78 79 80 81 82 83
                       
Fuel Pump All---->                    
Accumulator All---->                    
Fuel filter All---->                    
Fuel distributor All---->                    
Airflow assembly All---->                    
Injectors All---->                    
Fuel lines All---->         <-- P* M* -->    
Decel valve All---->                    
Cold start injector All---->                    
WUR (non-vacuum) x x x                
WUR (vacuum)       x x x x x x x x
Throttle regulator x x x                
Throttle sw (cold start) x x x                
Hand throttle x x x                
Thermotime switch   x x x x x x x x x x
Aux air valve       x x x x x x x x
Aux air regulator       x x x x x x x x
Vacuum switch         x x x ? ? ? ?
                       
* Plastic, Metal 
For the part numbers for specific year models, see cross-reference.
Look at photos under "Components" to see physical differences in parts.