|      Year | 
                 Starter # | 
              Voltage | 
              Output    (HP) | 
              Minimum Commutator Diameter  | 
              Armature End-Play         
                inch & mm | 
              Solenoid  Pull-in Voltage | 
            
            
              | 1961-1965 | 
              VW 113 911 021   Bosch SR11X | 
              6 volt | 
                0.5 hp | 
              1.319" (33.5) | 
              0.004-0.012" (0.1-0.3 mm) | 
                3.3 volts | 
            
            
              | 1966 | 
              VW 113 911 021B Bosch #SR11X | 
              6 volt | 
                0.5 hp | 
              1.299" (33) | 
              0.004-0.012" (0.1-0.3 mm) | 
                3.3 volts | 
            
            
              | 1967 | 
              Bosch 211 911 023 Bosch #SR15X | 
              12 volt | 
                0.7 hp | 
              1.319" (33.5) | 
              0.004-0.012" (0.1-0.3 mm) | 
                7 volts | 
            
            
              | 1968 | 
              VW 111 911 023A Bosch #SR15X | 
              12 volt | 
                0.7 hp | 
              1.299" (33) 1.358 (34.5) | 
              0.004-0.012 (0.1-0.3 mm) | 
                7 volts | 
            
            
              | 1969 | 
              VW 111 911 023 Bosch  #SR15X | 
              12 volt | 
                0.7 hp | 
              1.358" (34.5) | 
               0.004-0.012 (0.1-0.3 mm) | 
                7 volts | 
            
            
              | 1970 | 
              Bosch 311 911 023B  #SR15X | 
              12 volt | 
                0.7 hp | 
              1.358" (34.5) | 
              0.004-0.012 (0.1-0.3 mm) | 
                7 volts | 
            
            
              | 1971 & Later | 
              Bosch 311 911 023 B/C/D  or
                #SR15X | 
              12 volt | 
                0.7 hp | 
              1.358" (34.5) | 
              0.004-0.012" (0.1-0.3 mm) | 
                7 volts | 
            
            
              | All Automatics | 
              #SR17X                 
                Bosch 003 911 023A | 
              12 volt | 
                0.8 hp | 
              1.350" (34.5) | 
              0.004-0.012" (0.1-0.3 mm) | 
                7 volts |