Also see 34910 for older aftermarket water sensors.
- Removes and installs the water sensor located on the fuel filter on 2012 and newer 6.6L Duramax diesel engines
- For use when replacing the fuel filter or when servicing the water sensor
- The plastic sensor has a new hex design that is easily damaged by tools, like pliers, that do not specifically fit the sensor
Lisle 34900 Water Sensor Wrench (OEM Version) 
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