Crankshaft Position Sensor for VQ35DE engines found in the 350Z or G35. This sensor is mounted in the rear of the oil pan to read the position of crankshaft by the notches on the flywheel.  This sensor is produced by the same manufacturer that builds it for Nissan to the same standards.  

Purchase a genuine Nissan VQ35DE crankshaft position sensor HERE.

Note: This sensor may, or may not, come with a new o-ring.