Reconditioned differential yoke for 8.5" 10-bolt "B" or "P" axle assembly with 1.438" pinion diameter, 1.155" - 27 spline and 1.640" seal diameter. 10 bolt inspection cover with 10 bolt ring gear 64-67. Comes complete with nut, washer, and U-bolt. Because GM B-P-O 10-12 bolt pinion yokes with 27 spline are obsolete we can no longer sell new ones. We take good used yokes and shot peen them then inspect and repair all U-joint and seal attachment areas to make a quality useable yoke for you. In some cases the seal diameter may be re-sleeved back to OEM specs "just like new".