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Speed sensor, location/task/function - GF27.19-P-5127N

TRANSMISSION 722.9 in MODEL 171.4, 203, 230 up to Model Year 8 

TRANSMISSION 722.9 in MODEL 209, 211, 215, 219, 220 

TRANSMISSION 722.9 in MODEL 463.303/340/341 

Fig 1: Locating Speed Sensors
G07287859Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Speed sensor, location The turbine speed sensor (VGS) (Y3/8n1), the internal speed sensor (VGS) (Y3/8n2) and output speed sensor (VGS) (Y3/8n3) are permanently connected to the electric control unit (VGS) (Y3/8) and cannot be replaced individually.  
Speed sensor, task Turbine speed sensor GF27.19-P-5127-02N 
Internal RPM sensor GF27.19-P-5127-02P 
Output speed sensor GF27.19-P-5127-02O 
Speed sensor, function Turbine speed sensor GF27.19-P-5127-04N 
Internal RPM sensor GF27.19-P-5127-04P 
Output speed sensor GF27.19-P-5127-04O