Speed / Reference / Knock Sensors

Gearbox speed sensor.
The gearbox speed sensor detects the rotational speed of the gearbox output shaft and provides the necessary data to the engine control module, gearbox electronics and dashboard gauges.

Fits:
Porsche 981 / 982 (718) Boxster / S 2012>> (Manual Models Only)
Porsche 981 / 982 (718) Cayman / S 2013>> (Manual Models Only) 
Porsche 981 Boxster Spyder 3.8L 2016 
Porsche 981 Cayman GT4 3.8L 2016 
Porsche 982 (718) Spyder / Cayman GT4 4.0L 2019>> (Only For Gearbox Code G8225) 

Diagram ref no 11

This sensor monitors how fast the gearbox is turning and sends that data to the vehicle’s control systems. It helps the transmission and engine computer decide shift points, rev matches, speedometer readings, and in some cases limits or safety functions. Without an accurate signal, many systems can’t function correctly.

A faulty speed sensor can lead to incorrect or delayed speed readings, inconsistent shifting behaviour, or misreported speed on the dashboard. Over time, wear, contamination, or mechanical damage can degrade sensor performance. Replacing it restores precise transmission control, safer driving, and prevents further damage to related components like the gearbox ECU, shift linkage, or drive train.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

9A7905381

The product you are viewing cross references to these numbers

Gearbox speed sensor.



Fits:
Porsche 981 / 982 (718) Boxster / S 2012>> (Manual Models Only) 

Porsche 981 / 982 (718) Cayman / S 2013>> (Manual Models Only) 
Porsche 981 Boxster Spyder 3.8L 2016 
Porsche 981 Cayman GT4 3.8L 2016 
Porsche 982 (718) Spyder / Cayman GT4 4.0L 2019>> (Only For Gearbox Code G8225) 

Click 'Zoom in' for large parts diagram.
Diagram ref no 11

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

9A7905381

The product you are viewing cross references to these numbers

Gearbox speed sensor.



Fits:
Porsche 981 / 982 (718) Boxster / S 2012>> (Manual Models Only) 

Porsche 981 / 982 (718) Cayman / S 2013>> (Manual Models Only) 
Porsche 981 Boxster Spyder 3.8L 2016 
Porsche 981 Cayman GT4 3.8L 2016 
Porsche 982 (718) Spyder / Cayman GT4 4.0L 2019>> (Only For Gearbox Code G8225) 

Click 'Zoom in' for large parts diagram.
Diagram ref no 11

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

9A7905381

The product you are viewing cross references to these numbers