This is a genuine AAM 1410 series rear pinion yoke for the GM 9.5 rear differential. This can also be used on the 8.5/8.6 10 bolt rear differential found in the 1/2 trucks form 1981-current. This is the later style yoke with the wear sleeve on the seal surface so you must use the late (1999+) pinion seal. Please note that the 1410 was never a factory option for the 8.5/8.6 and was rarely used on the 9.5, but this can be used when upgrading the driveline. Shipping is FAST and FREE in the U.S.