|The oil level sensor is mounted on the oil pan.|
|Remove the electrical connector. You will have to lift up the clip that is hidden in this recess. Brian used a spring clip to disengage the clip. Drain the oil (might as well do an oil and filter change).|
|Factory installed sensor. Note o-ring.|
Replacement sensor. As seen here, the new sensor now has a washer with a second seal around it. The original O-ring is still there between the washer and the nut part of the sensor. The oil pan has a slight dimple around the threads into which the original O-ring or the rubber part of the washer seen here will mate to.
The new part number is 12579985 and listed for $48.91.
Reinstall and tighten to 12 ft-lb (16 N-m). Reconnect the electrical connector and fill with oil.