These oil slingers / Deflectors often get damaged when the pinion bearings go bad on Toyota 8″ differentials. This is the part that goes between the outer pinion bearing and the pinion seal. It is a critical part of keeping the outer pinion bearing lubricated, especially in rear applications where the pinion angle has been rotated upwards. Fits all Toyota 8″ diffs found in 79-current pickups and 4runners with 8″ diff (elocker only on tacoma). Not for use with high pinion 8″ diff. This is a genuine Toyota part.